#21538C#21538C

#21538C is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.9% C 0.108 H 253.9°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#21538C
RGB	rgb(33, 83, 140)
HSL	hsl(212, 62%, 34%)
HSV	hsv(212, 76%, 55%)
CMYK	cmyk(76.4%, 40.7%, 0%, 45.1%)
CIE-LAB	lab(34.81, 4.18, -36.45)
CIE-LCH	lch(34.81, 36.69, 276.54°)
OKLab	oklab(43.88% -0.03 -0.104)
OKLCH	oklch(43.88% 0.108 253.9)
XYZ	xyz(8.4523, 8.4023, 25.9822)
Luminance	0.0840 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21538C #8C5A21

analogous

#21898C #21538C #25218C

triadic

#21538C #8C2153 #538C21

tetradic

#21538C #8C2189 #8C5A21 #218C25

square

#21538C #8C2189 #8C5A21 #218C25

split-complementary

#21538C #8C2521 #898C21

monochromatic

#0A1829 #15365A #21538C #2D70BE #518FD6

Accessibility & contrast

On white

7.83

#21538C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#21538C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21538C

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21538C	#FFFFFF	#000000	##FFFFFF
##21538C	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38578E

Deuteranopia (green-blind)

#274D8B

Tritanopia (blue-blind)

#006068

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #21538c;
/* rgb */ color: rgb(33, 83, 140);
/* oklch */ color: oklch(43.9% 0.108 253.9);

Tailwind

colors: {
  custom: {
    50: '#6c82ae',
    500: '#21538c',
    950: '#000000',
  },
}

SCSS

$custom: #21538c;
$custom-light: #6c82ae;
$custom-dark: #000000;

JSON

{
  "hex": "#21538c",
  "rgb": {
    "r": 33,
    "g": 83,
    "b": 140
  },
  "hsl": {
    "h": 211.963,
    "s": 61.85,
    "l": 33.922
  },
  "oklch": {
    "l": 0.43878,
    "c": 0.10828,
    "h": 253.9
  },
  "luminance": 0.08403
}

Semantic roles & 50–950 ramp

primary

#21538C

secondary

#B9884F

accent

#9943E5

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #21538C

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

Preview Lab → · Contrast checker → · Palette generator →