#21508B#21508B

#21508B is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 43.1% C 0.110 H 255.6°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#21508B
RGB	rgb(33, 80, 139)
HSL	hsl(213, 62%, 34%)
HSV	hsv(213, 76%, 55%)
CMYK	cmyk(76.3%, 42.4%, 0%, 45.5%)
CIE-LAB	lab(33.82, 5.77, -37.41)
CIE-LCH	lch(33.82, 37.85, 278.76°)
OKLab	oklab(43.09% -0.0274 -0.1069)
OKLCH	oklch(43.09% 0.11 255.6)
XYZ	xyz(8.1543, 7.9238, 25.5208)
Luminance	0.0793 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21508B #8B5C21

analogous

#21858B #21508B #27218B

triadic

#21508B #8B2150 #508B21

tetradic

#21508B #8B2185 #8B5C21 #218B27

square

#21508B #8B2185 #8B5C21 #218B27

split-complementary

#21508B #8B2721 #858B21

monochromatic

#0A1728 #15345A #21508B #2D6CBC #518CD6

Accessibility & contrast

On white

8.12

#21508B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#21508B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21508B

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21508B	#FFFFFF	#000000	##FFFFFF
##21508B	1.00	8.12	2.59	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34558D

Deuteranopia (green-blind)

#224B8A

Tritanopia (blue-blind)

#005E66

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #21508b;
/* rgb */ color: rgb(33, 80, 139);
/* oklch */ color: oklch(43.1% 0.110 255.6);

Tailwind

colors: {
  custom: {
    50: '#6c80ad',
    500: '#21508b',
    950: '#000000',
  },
}

SCSS

$custom: #21508b;
$custom-light: #6c80ad;
$custom-dark: #000000;

JSON

{
  "hex": "#21508b",
  "rgb": {
    "r": 33,
    "g": 80,
    "b": 139
  },
  "hsl": {
    "h": 213.396,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.43093,
    "c": 0.11035,
    "h": 255.6
  },
  "luminance": 0.07925
}

Semantic roles & 50–950 ramp

primary

#21508B

secondary

#B98A4F

accent

#9D43E5

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #21508B

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

Preview Lab → · Contrast checker → · Palette generator →