#21577A#21577A

#21577A is a dark, moderate cyan. Relative luminance 0.085; OKLCH L 43.8% C 0.081 H 240.7°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#21577A
RGB	rgb(33, 87, 122)
HSL	hsl(204, 57%, 30%)
HSV	hsv(204, 73%, 48%)
CMYK	cmyk(73%, 28.7%, 0%, 52.2%)
CIE-LAB	lab(35.09, -5.32, -24.95)
CIE-LCH	lch(35.09, 25.51, 257.98°)
OKLab	oklab(43.78% -0.0395 -0.0704)
OKLCH	oklch(43.78% 0.081 240.7)
XYZ	xyz(7.5469, 8.5440, 19.6600)
Luminance	0.0854 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21577A #7A4421

analogous

#217A70 #21577A #212A7A

triadic

#21577A #7A2157 #577A21

tetradic

#21577A #70217A #7A4421 #2A7A21

square

#21577A #70217A #7A4421 #2A7A21

split-complementary

#21577A #7A212A #7A7021

monochromatic

#07121A #14354A #21577A #2E79AA #4899CD

Accessibility & contrast

On white

7.75

#21577A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#21577A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21577A

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21577A	#FFFFFF	#000000	##FFFFFF
##21577A	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47577C

Deuteranopia (green-blind)

#3B4F79

Tritanopia (blue-blind)

#006063

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #21577a;
/* rgb */ color: rgb(33, 87, 122);
/* oklch */ color: oklch(43.8% 0.081 240.7);

Tailwind

colors: {
  custom: {
    50: '#6886a0',
    500: '#21577a',
    950: '#000000',
  },
}

SCSS

$custom: #21577a;
$custom-light: #6886a0;
$custom-dark: #000000;

JSON

{
  "hex": "#21577a",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 122
  },
  "hsl": {
    "h": 203.596,
    "s": 57.419,
    "l": 30.392
  },
  "oklch": {
    "l": 0.43781,
    "c": 0.08072,
    "h": 240.7
  },
  "luminance": 0.08545
}

Semantic roles & 50–950 ramp

primary

#21577A

secondary

#AD714A

accent

#8447E1

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#070B0E

muted

#7A7C7E

Preview Lab

Preview with #21577A

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

Preview Lab → · Contrast checker → · Palette generator →