CadetBlue

#5F9EA0

Named after the grayish, muted blue of 19th-century military cadet uniform cloth — a genuinely different shade from 'Navy,' which draws on the much darker dye used for naval officers' coats.

Every value on this page is computed at build time from the hex code above using ChromaWell's shared, unit-tested color-core library — the same conversion, contrast, and nearest-name math used across every color page on this site, so a value here matches the same color looked up anywhere else on ChromaWell.

The conversions block gives you the same color in seven common formats (hex, RGB, HSL, HSV, CMYK, Lab, and OKLCH) so you can copy whichever your codebase or design tool expects. The contrast block applies the WCAG 2.x relative-luminance formula against several common backgrounds and reports whether text in this color would pass AA or AAA at normal and large text sizes. Shades/tints step the lightness up and down at a fixed hue and saturation; harmonies rotate the hue around the color wheel to surface complementary, analogous, triadic, and split-complementary partners; and nearest named colors ranks the closest matches from our full 1,094-color dataset by CIE76 Delta-E distance in Lab space, a perceptual distance metric rather than a raw RGB difference.

Conversions

HEX: #5F9EA0
RGB: rgb(95, 158, 160)
HSL: hsl(181.8, 25.5%, 50%)
HSV: hsv(181.8, 40.6%, 62.7%)
CMYK: cmyk(40.6, 1.2, 0, 37.3)
Lab: lab(61.15, -19.68, -7.42)
OKLCH: oklch(0.6577 0.065 198.3)

WCAG contrast

On white: 3.05:1 — normal text FAIL, large text AA
On black: 6.88:1 — normal text AA, large text AAA
On pure white: 3.05:1 — normal text FAIL, large text AA
On pure black: 6.88:1 — normal text AA, large text AAA
On light gray (#F3F4F6): 2.77:1 — normal text FAIL, large text FAIL
On dark slate (#1F2937): 4.81:1 — normal text AA, large text AAA

Ratios computed from WCAG 2.x relative luminance; AA needs 4.5:1 for normal text and 3:1 for large text (18pt+ or 14pt+ bold), AAA needs 7:1 and 4.5:1 respectively.

Shades & tints

#263F40

#426F70

#5F9EA0

#8FBBBD

#BFD8D9

Lightness stepped ±15% and ±30% in HSL space at constant hue and saturation (181.8°, 25.5%) — a shade darkens toward black, a tint lightens toward white.

Color harmonies

Hue-wheel relationships computed at this color's exact hue (181.8°), holding saturation and lightness constant.

Complementary

#A0615F

rgb(160, 97, 95)

Analogous −30°

#5FA081

rgb(95, 160, 129)

Analogous +30°

#5F7EA0

rgb(95, 126, 160)

Triadic 120°

#A05F9E

rgb(160, 95, 158)

Triadic 240°

#9EA05F

rgb(158, 160, 95)

Split-complementary −150°

#A0815F

rgb(160, 129, 95)

Split-complementary +150°

#A05F7E

rgb(160, 95, 126)

Nearest named colors

CadetBlue (ΔE 0.0)
DarkCyan (ΔE 14.2)
Teal (ΔE 15.9)
LightSeaGreen (ΔE 18.5)
LightSlateGray (ΔE 18.6)

Ranked by CIE76 Delta-E distance in Lab space — the lower the number, the closer the perceptual match to this exact color.

Perceptual profile

Hue 181.8° places this color in the cool range of the wheel. At 25.5% saturation it reads as muted, and at 50% lightness it sits at mid-tone. In OKLCH — the newer, perceptually uniform color space — this color's lightness is 0.6577, chroma 0.065, hue 198.3°, which is a more accurate predictor of how "bright" this color will look next to others than HSL lightness alone.

Use in CSS

This is a cool hue at 25.5% saturation and 50% lightness. Drop it into a stylesheet as a custom property:

:root {
  --color-5f9ea0: #5F9EA0;
}
.el {
  color: var(--color-5f9ea0);
}

Part of the open CSS/X11 named-color set — see methodology.