#21588B#21588B

#21588B is a mid, moderate cyan. Relative luminance 0.092; OKLCH L 45.0% C 0.101 H 249.7°. Best body text is #FFFFFF at 7.41:1 contrast (WCAG AA passes).

Color values

HEX	#21588B
RGB	rgb(33, 88, 139)
HSL	hsl(209, 62%, 34%)
HSV	hsv(209, 76%, 55%)
CMYK	cmyk(76.3%, 36.7%, 0%, 45.5%)
CIE-LAB	lab(36.30, 0.55, -33.47)
CIE-LCH	lch(36.30, 33.47, 270.94°)
OKLab	oklab(45.03% -0.0351 -0.0952)
OKLCH	oklch(45.03% 0.101 249.7)
XYZ	xyz(8.7754, 9.1659, 25.7278)
Luminance	0.0917 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21588B #8B5421

analogous

#218B89 #21588B #21238B

triadic

#21588B #8B2158 #588B21

tetradic

#21588B #89218B #8B5421 #238B21

square

#21588B #89218B #8B5421 #238B21

split-complementary

#21588B #8B2123 #8B8921

monochromatic

#0A1928 #15395A #21588B #2D77BC #5196D6

Accessibility & contrast

On white

7.41

#21588B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#21588B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21588B

7.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21588B	#FFFFFF	#000000	##FFFFFF
##21588B	1.00	7.41	2.83	7.41
#FFFFFF	7.41	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#415B8D

Deuteranopia (green-blind)

#31518A

Tritanopia (blue-blind)

#00646B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #21588b;
/* rgb */ color: rgb(33, 88, 139);
/* oklch */ color: oklch(45.0% 0.101 249.7);

Tailwind

colors: {
  custom: {
    50: '#6c86ad',
    500: '#21588b',
    950: '#000000',
  },
}

SCSS

$custom: #21588b;
$custom-light: #6c86ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21588b",
  "rgb": {
    "r": 33,
    "g": 88,
    "b": 139
  },
  "hsl": {
    "h": 208.868,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.45028,
    "c": 0.10148,
    "h": 249.7
  },
  "luminance": 0.09167
}

Semantic roles & 50–950 ramp

primary

#21588B

secondary

#B9824F

accent

#9143E5

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #21588B

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

Preview Lab → · Contrast checker → · Palette generator →