#21578A#21578A

#21578A is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.7% C 0.101 H 250.1°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#21578A
RGB	rgb(33, 87, 138)
HSL	hsl(209, 61%, 34%)
HSV	hsv(209, 76%, 54%)
CMYK	cmyk(76.1%, 37%, 0%, 45.9%)
CIE-LAB	lab(35.93, 0.80, -33.44)
CIE-LCH	lch(35.93, 33.45, 271.37°)
OKLab	oklab(44.72% -0.0344 -0.0951)
OKLCH	oklch(44.72% 0.101 250.1)
XYZ	xyz(8.6211, 8.9737, 25.3176)
Luminance	0.0897 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#21578A #8A5421

analogous

#218A88 #21578A #21228A

triadic

#21578A #8A2157 #578A21

tetradic

#21578A #88218A #8A5421 #228A21

square

#21578A #88218A #8A5421 #228A21

split-complementary

#21578A #8A2122 #8A8821

monochromatic

#091927 #153859 #21578A #2D76BB #5095D5

Accessibility & contrast

On white

7.51

#21578A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#21578A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #21578A

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##21578A	#FFFFFF	#000000	##FFFFFF
##21578A	1.00	7.51	2.79	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#405A8C

Deuteranopia (green-blind)

#305089

Tritanopia (blue-blind)

#00636A

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #21578a;
/* rgb */ color: rgb(33, 87, 138);
/* oklch */ color: oklch(44.7% 0.101 250.1);

Tailwind

colors: {
  custom: {
    50: '#6b86ac',
    500: '#21578a',
    950: '#000000',
  },
}

SCSS

$custom: #21578a;
$custom-light: #6b86ac;
$custom-dark: #000000;

JSON

{
  "hex": "#21578a",
  "rgb": {
    "r": 33,
    "g": 87,
    "b": 138
  },
  "hsl": {
    "h": 209.143,
    "s": 61.404,
    "l": 33.529
  },
  "oklch": {
    "l": 0.44721,
    "c": 0.10119,
    "h": 250.1
  },
  "luminance": 0.08975
}

Semantic roles & 50–950 ramp

primary

#21578A

secondary

#B9824E

accent

#9243E5

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #21578A

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

Preview Lab → · Contrast checker → · Palette generator →