#21538B#21538B

#21538B is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.8% C 0.107 H 253.6°. Best body text is #FFFFFF at 7.85:1 contrast (WCAG AA passes).

Color values

HEX	#21538B
RGB	rgb(33, 83, 139)
HSL	hsl(212, 62%, 34%)
HSV	hsv(212, 76%, 55%)
CMYK	cmyk(76.3%, 40.3%, 0%, 45.5%)
CIE-LAB	lab(34.75, 3.79, -35.94)
CIE-LCH	lch(34.75, 36.14, 276.02°)
OKLab	oklab(43.81% -0.0302 -0.1025)
OKLCH	oklch(43.81% 0.107 253.6)
XYZ	xyz(8.3789, 8.3730, 25.5956)
Luminance	0.0837 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21538B #8B5921

analogous

#21888B #21538B #24218B

triadic

#21538B #8B2153 #538B21

tetradic

#21538B #8B2188 #8B5921 #218B24

square

#21538B #8B2188 #8B5921 #218B24

split-complementary

#21538B #8B2421 #888B21

monochromatic

#0A1828 #15355A #21538B #2D71BC #518FD6

Accessibility & contrast

On white

7.85

#21538B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.67

#21538B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21538B

7.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21538B	#FFFFFF	#000000	##FFFFFF
##21538B	1.00	7.85	2.67	7.85
#FFFFFF	7.85	1.00	21.00	1.00
#000000	2.67	21.00	1.00	21.00
##FFFFFF	7.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#39578D

Deuteranopia (green-blind)

#284D8A

Tritanopia (blue-blind)

#006068

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #21538b;
/* rgb */ color: rgb(33, 83, 139);
/* oklch */ color: oklch(43.8% 0.107 253.6);

Tailwind

colors: {
  custom: {
    50: '#6c82ad',
    500: '#21538b',
    950: '#000000',
  },
}

SCSS

$custom: #21538b;
$custom-light: #6c82ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21538b",
  "rgb": {
    "r": 33,
    "g": 83,
    "b": 139
  },
  "hsl": {
    "h": 211.698,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.43812,
    "c": 0.10689,
    "h": 253.6
  },
  "luminance": 0.08374
}

Semantic roles & 50–950 ramp

primary

#21538B

secondary

#B9874F

accent

#9843E5

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #21538B

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

Preview Lab → · Contrast checker → · Palette generator →