#21557D#21557D

#21557D is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.4% C 0.086 H 245.0°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#21557D
RGB	rgb(33, 85, 125)
HSL	hsl(206, 58%, 31%)
HSV	hsv(206, 74%, 49%)
CMYK	cmyk(73.6%, 32%, 0%, 51%)
CIE-LAB	lab(34.60, -2.92, -27.57)
CIE-LCH	lch(34.60, 27.73, 263.95°)
OKLab	oklab(43.44% -0.0363 -0.078)
OKLCH	oklch(43.44% 0.086 245)
XYZ	xyz(7.5760, 8.3002, 20.6009)
Luminance	0.0830 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21557D #7D4921

analogous

#217D77 #21557D #21277D

triadic

#21557D #7D2155 #557D21

tetradic

#21557D #77217D #7D4921 #277D21

square

#21557D #77217D #7D4921 #277D21

split-complementary

#21557D #7D2127 #7D7721

monochromatic

#07131C #14344D #21557D #2E76AD #4995CF

Accessibility & contrast

On white

7.89

#21557D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#21557D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21557D

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21557D	#FFFFFF	#000000	##FFFFFF
##21557D	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#43567F

Deuteranopia (green-blind)

#364D7C

Tritanopia (blue-blind)

#005F63

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #21557d;
/* rgb */ color: rgb(33, 85, 125);
/* oklch */ color: oklch(43.4% 0.086 245.0);

Tailwind

colors: {
  custom: {
    50: '#6984a3',
    500: '#21557d',
    950: '#000000',
  },
}

SCSS

$custom: #21557d;
$custom-light: #6984a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21557d",
  "rgb": {
    "r": 33,
    "g": 85,
    "b": 125
  },
  "hsl": {
    "h": 206.087,
    "s": 58.228,
    "l": 30.98
  },
  "oklch": {
    "l": 0.43443,
    "c": 0.08608,
    "h": 245
  },
  "luminance": 0.08301
}

Semantic roles & 50–950 ramp

primary

#21557D

secondary

#B0764A

accent

#8A46E1

background

#F6F8FA

surface

#EBEFF3

border

#C6CACD

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #21557D

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

Preview Lab → · Contrast checker → · Palette generator →