#21537E#21537E

#21537E is a dark, moderate cyan. Relative luminance 0.080; OKLCH L 43.0% C 0.089 H 247.7°. Best body text is #FFFFFF at 8.07:1 contrast (WCAG AA passes).

Color values

HEX	#21537E
RGB	rgb(33, 83, 126)
HSL	hsl(208, 58%, 31%)
HSV	hsv(208, 74%, 49%)
CMYK	cmyk(73.8%, 34.1%, 0%, 50.6%)
CIE-LAB	lab(34.01, -1.27, -29.11)
CIE-LCH	lch(34.01, 29.14, 267.51°)
OKLab	oklab(43% -0.0339 -0.0825)
OKLCH	oklch(43% 0.089 247.7)
XYZ	xyz(7.4849, 8.0154, 20.8873)
Luminance	0.0802 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21537E #7E4C21

analogous

#217E7A #21537E #21247E

triadic

#21537E #7E2153 #537E21

tetradic

#21537E #7A217E #7E4C21 #247E21

square

#21537E #7A217E #7E4C21 #247E21

split-complementary

#21537E #7E2124 #7E7A21

monochromatic

#08131D #14334E #21537E #2E73AE #4A92D0

Accessibility & contrast

On white

8.07

#21537E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#21537E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21537E

8.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21537E	#FFFFFF	#000000	##FFFFFF
##21537E	1.00	8.07	2.60	8.07
#FFFFFF	8.07	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#405580

Deuteranopia (green-blind)

#324C7D

Tritanopia (blue-blind)

#005D62

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #21537e;
/* rgb */ color: rgb(33, 83, 126);
/* oklch */ color: oklch(43.0% 0.089 247.7);

Tailwind

colors: {
  custom: {
    50: '#6983a3',
    500: '#21537e',
    950: '#000000',
  },
}

SCSS

$custom: #21537e;
$custom-light: #6983a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21537e",
  "rgb": {
    "r": 33,
    "g": 83,
    "b": 126
  },
  "hsl": {
    "h": 207.742,
    "s": 58.491,
    "l": 31.176
  },
  "oklch": {
    "l": 0.42999,
    "c": 0.08924,
    "h": 247.7
  },
  "luminance": 0.08016
}

Semantic roles & 50–950 ramp

primary

#21537E

secondary

#B17A4A

accent

#8E46E2

background

#F6F7FA

surface

#EBEEF4

border

#C6C9CE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #21537E

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

Preview Lab → · Contrast checker → · Palette generator →