#21577E#21577E

#21577E is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 44.0% C 0.086 H 243.6°. Best body text is #FFFFFF at 7.69:1 contrast (WCAG AA passes).

Color values

HEX	#21577E
RGB	rgb(33, 87, 126)
HSL	hsl(205, 58%, 31%)
HSV	hsv(205, 74%, 49%)
CMYK	cmyk(73.8%, 31%, 0%, 50.6%)
CIE-LAB	lab(35.29, -3.81, -27.10)
CIE-LCH	lch(35.29, 27.37, 262.00°)
OKLab	oklab(44.01% -0.0381 -0.0766)
OKLCH	oklch(44.01% 0.086 243.6)
XYZ	xyz(7.7998, 8.6452, 20.9922)
Luminance	0.0865 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21577E #7E4821

analogous

#217E76 #21577E #21287E

triadic

#21577E #7E2157 #577E21

tetradic

#21577E #76217E #7E4821 #287E21

square

#21577E #76217E #7E4821 #287E21

split-complementary

#21577E #7E2128 #7E7621

monochromatic

#08141D #14364E #21577E #2E78AE #4A97D0

Accessibility & contrast

On white

7.69

#21577E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#21577E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21577E

7.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21577E	#FFFFFF	#000000	##FFFFFF
##21577E	1.00	7.69	2.73	7.69
#FFFFFF	7.69	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#455880

Deuteranopia (green-blind)

#384F7D

Tritanopia (blue-blind)

#006165

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #21577e;
/* rgb */ color: rgb(33, 87, 126);
/* oklch */ color: oklch(44.0% 0.086 243.6);

Tailwind

colors: {
  custom: {
    50: '#6986a3',
    500: '#21577e',
    950: '#000000',
  },
}

SCSS

$custom: #21577e;
$custom-light: #6986a3;
$custom-dark: #000000;

JSON

{
  "hex": "#21577e",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 126
  },
  "hsl": {
    "h": 205.161,
    "s": 58.491,
    "l": 31.176
  },
  "oklch": {
    "l": 0.44006,
    "c": 0.08561,
    "h": 243.6
  },
  "luminance": 0.08646
}

Semantic roles & 50–950 ramp

primary

#21577E

secondary

#B1754A

accent

#8746E2

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B0F

muted

#7A7C7F

Preview Lab

Preview with #21577E

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

Preview Lab → · Contrast checker → · Palette generator →