#21537F#21537F

#21537F is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 43.1% C 0.091 H 248.2°. Best body text is #FFFFFF at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#21537F
RGB	rgb(33, 83, 127)
HSL	hsl(208, 59%, 31%)
HSV	hsv(208, 74%, 50%)
CMYK	cmyk(74%, 34.6%, 0%, 50.2%)
CIE-LAB	lab(34.07, -0.88, -29.65)
CIE-LCH	lch(34.07, 29.66, 268.30°)
OKLab	oklab(43.06% -0.0336 -0.0841)
OKLCH	oklch(43.06% 0.091 248.2)
XYZ	xyz(7.5498, 8.0413, 21.2288)
Luminance	0.0804 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21537F #7F4D21

analogous

#217F7C #21537F #21247F

triadic

#21537F #7F2153 #537F21

tetradic

#21537F #7C217F #7F4D21 #247F21

square

#21537F #7C217F #7F4D21 #247F21

split-complementary

#21537F #7F2124 #7F7C21

monochromatic

#08141E #14334E #21537F #2E73B0 #4A91D0

Accessibility & contrast

On white

8.05

#21537F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#21537F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21537F

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21537F	#FFFFFF	#000000	##FFFFFF
##21537F	1.00	8.05	2.61	8.05
#FFFFFF	8.05	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5581

Deuteranopia (green-blind)

#324C7E

Tritanopia (blue-blind)

#005D63

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #21537f;
/* rgb */ color: rgb(33, 83, 127);
/* oklch */ color: oklch(43.1% 0.091 248.2);

Tailwind

colors: {
  custom: {
    50: '#6983a4',
    500: '#21537f',
    950: '#000000',
  },
}

SCSS

$custom: #21537f;
$custom-light: #6983a4;
$custom-dark: #000000;

JSON

{
  "hex": "#21537f",
  "rgb": {
    "r": 33,
    "g": 83,
    "b": 127
  },
  "hsl": {
    "h": 208.085,
    "s": 58.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.43059,
    "c": 0.09057,
    "h": 248.2
  },
  "luminance": 0.08042
}

Semantic roles & 50–950 ramp

primary

#21537F

secondary

#B27B4A

accent

#8F46E2

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #21537F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →