#21579A#21579A

#21579A is a mid, vivid cyan. Relative luminance 0.095; OKLCH L 45.8% C 0.123 H 255.7°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#21579A
RGB	rgb(33, 87, 154)
HSL	hsl(213, 65%, 37%)
HSV	hsv(213, 79%, 60%)
CMYK	cmyk(78.6%, 43.5%, 0%, 39.6%)
CIE-LAB	lab(36.88, 7.07, -41.63)
CIE-LCH	lch(36.88, 42.22, 279.63°)
OKLab	oklab(45.76% -0.0304 -0.1192)
OKLCH	oklch(45.76% 0.123 255.7)
XYZ	xyz(9.8660, 9.4717, 31.8738)
Luminance	0.0947 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21579A #9A6421

analogous

#21949A #21579A #27219A

triadic

#21579A #9A2157 #579A21

tetradic

#21579A #9A2194 #9A6421 #219A27

square

#21579A #9A2194 #9A6421 #219A27

split-complementary

#21579A #9A2721 #949A21

monochromatic

#0B1E35 #163B68 #21579A #2C73CC #5A94DC

Accessibility & contrast

On white

7.25

#21579A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#21579A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21579A

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21579A	#FFFFFF	#000000	##FFFFFF
##21579A	1.00	7.25	2.89	7.25
#FFFFFF	7.25	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#365D9D

Deuteranopia (green-blind)

#1F5299

Tritanopia (blue-blind)

#006771

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #21579a;
/* rgb */ color: rgb(33, 87, 154);
/* oklch */ color: oklch(45.8% 0.123 255.7);

Tailwind

colors: {
  custom: {
    50: '#6f85b8',
    500: '#21579a',
    950: '#000000',
  },
}

SCSS

$custom: #21579a;
$custom-light: #6f85b8;
$custom-dark: #000000;

JSON

{
  "hex": "#21579a",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 154
  },
  "hsl": {
    "h": 213.223,
    "s": 64.706,
    "l": 36.667
  },
  "oklch": {
    "l": 0.45763,
    "c": 0.12299,
    "h": 255.7
  },
  "luminance": 0.09473
}

Semantic roles & 50–950 ramp

primary

#21579A

secondary

#C09157

accent

#9D40E8

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B11

muted

#7B7C80

Preview Lab

Preview with #21579A

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

Preview Lab → · Contrast checker → · Palette generator →