#21579C#21579C

#21579C is a mid, vivid cyan. Relative luminance 0.095; OKLCH L 45.9% C 0.126 H 256.2°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#21579C
RGB	rgb(33, 87, 156)
HSL	hsl(214, 65%, 37%)
HSV	hsv(214, 79%, 61%)
CMYK	cmyk(78.8%, 44.2%, 0%, 38.8%)
CIE-LAB	lab(37.00, 7.85, -42.63)
CIE-LCH	lch(37.00, 43.35, 280.44°)
OKLab	oklab(45.9% -0.03 -0.1221)
OKLCH	oklch(45.9% 0.126 256.2)
XYZ	xyz(10.0339, 9.5388, 32.7584)
Luminance	0.0954 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21579C #9C6621

analogous

#21949C #21579C #29219C

triadic

#21579C #9C2157 #579C21

tetradic

#21579C #9C2194 #9C6621 #219C29

square

#21579C #9C2194 #9C6621 #219C29

split-complementary

#21579C #9C2921 #949C21

monochromatic

#0C1F37 #163B69 #21579C #2C73CF #5B94DC

Accessibility & contrast

On white

7.22

#21579C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#21579C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21579C

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21579C	#FFFFFF	#000000	##FFFFFF
##21579C	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345D9F

Deuteranopia (green-blind)

#1C529B

Tritanopia (blue-blind)

#006772

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #21579c;
/* rgb */ color: rgb(33, 87, 156);
/* oklch */ color: oklch(45.9% 0.126 256.2);

Tailwind

colors: {
  custom: {
    50: '#6f85ba',
    500: '#21579c',
    950: '#000000',
  },
}

SCSS

$custom: #21579c;
$custom-light: #6f85ba;
$custom-dark: #000000;

JSON

{
  "hex": "#21579c",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 156
  },
  "hsl": {
    "h": 213.659,
    "s": 65.079,
    "l": 37.059
  },
  "oklch": {
    "l": 0.459,
    "c": 0.12574,
    "h": 256.2
  },
  "luminance": 0.0954
}

Semantic roles & 50–950 ramp

primary

#21579C

secondary

#C19358

accent

#9E40E8

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#090B11

muted

#7B7C80

Preview Lab

Preview with #21579C

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

Preview Lab → · Contrast checker → · Palette generator →