#21559B#21559B

#21559B is a mid, vivid cyan. Relative luminance 0.092; OKLCH L 45.4% C 0.127 H 257.0°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#21559B
RGB	rgb(33, 85, 155)
HSL	hsl(214, 65%, 37%)
HSV	hsv(214, 79%, 61%)
CMYK	cmyk(78.7%, 45.2%, 0%, 39.2%)
CIE-LAB	lab(36.34, 8.78, -43.09)
CIE-LCH	lch(36.34, 43.98, 281.51°)
OKLab	oklab(45.37% -0.0285 -0.1235)
OKLCH	oklch(45.37% 0.127 257)
XYZ	xyz(9.7899, 9.1857, 32.2611)
Luminance	0.0919 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21559B #9B6721

analogous

#21929B #21559B #2A219B

triadic

#21559B #9B2155 #559B21

tetradic

#21559B #9B2192 #9B6721 #219B2A

square

#21559B #9B2192 #9B6721 #219B2A

split-complementary

#21559B #9B2A21 #929B21

monochromatic

#0C1E36 #163969 #21559B #2C71CD #5A92DC

Accessibility & contrast

On white

7.40

#21559B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#21559B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21559B

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21559B	#FFFFFF	#000000	##FFFFFF
##21559B	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#315B9E

Deuteranopia (green-blind)

#18509A

Tritanopia (blue-blind)

#006670

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #21559b;
/* rgb */ color: rgb(33, 85, 155);
/* oklch */ color: oklch(45.4% 0.127 257.0);

Tailwind

colors: {
  custom: {
    50: '#6f84b9',
    500: '#21559b',
    950: '#000000',
  },
}

SCSS

$custom: #21559b;
$custom-light: #6f84b9;
$custom-dark: #000000;

JSON

{
  "hex": "#21559b",
  "rgb": {
    "r": 33,
    "g": 85,
    "b": 155
  },
  "hsl": {
    "h": 214.426,
    "s": 64.894,
    "l": 36.863
  },
  "oklch": {
    "l": 0.45367,
    "c": 0.12674,
    "h": 257
  },
  "luminance": 0.09187
}

Semantic roles & 50–950 ramp

primary

#21559B

secondary

#C09458

accent

#A040E8

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #21559B

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

Preview Lab → · Contrast checker → · Palette generator →