#51809D#51809D

#51809D is a mid, moderate cyan. Relative luminance 0.196; OKLCH L 57.8% C 0.068 H 236.7°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#51809D
RGB	rgb(81, 128, 157)
HSL	hsl(203, 32%, 47%)
HSV	hsv(203, 48%, 62%)
CMYK	cmyk(48.4%, 18.5%, 0%, 38.4%)
CIE-LAB	lab(51.41, -7.75, -20.49)
CIE-LCH	lch(51.41, 21.91, 249.28°)
OKLab	oklab(57.78% -0.0373 -0.0569)
OKLCH	oklch(57.78% 0.068 236.7)
XYZ	xyz(17.1962, 19.6207, 34.7728)
Luminance	0.1962 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51809D #9D6E51

analogous

#519D94 #51809D #515A9D

triadic

#51809D #9D5180 #809D51

tetradic

#51809D #94519D #9D6E51 #5A9D51

square

#51809D #94519D #9D6E51 #5A9D51

split-complementary

#51809D #9D515A #9D9451

monochromatic

#273E4C #3C5F75 #51809D #749EB7 #9CBACC

Accessibility & contrast

On white

4.26

#51809D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#51809D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51809D

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51809D	#FFFFFF	#000000	##000000
##51809D	1.00	4.26	4.92	4.92
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#737F9E

Deuteranopia (green-blind)

#68779D

Tritanopia (blue-blind)

#2D8889

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #51809d;
/* rgb */ color: rgb(81, 128, 157);
/* oklch */ color: oklch(57.8% 0.068 236.7);

Tailwind

colors: {
  custom: {
    50: '#86a4ba',
    500: '#51809d',
    950: '#000000',
  },
}

SCSS

$custom: #51809d;
$custom-light: #86a4ba;
$custom-dark: #000000;

JSON

{
  "hex": "#51809d",
  "rgb": {
    "r": 81,
    "g": 128,
    "b": 157
  },
  "hsl": {
    "h": 202.895,
    "s": 31.933,
    "l": 46.667
  },
  "oklch": {
    "l": 0.5778,
    "c": 0.06803,
    "h": 236.7
  },
  "luminance": 0.19622
}

Semantic roles & 50–950 ramp

primary

#51809D

secondary

#B9A091

accent

#8860C8

background

#F8FAFB

surface

#F0F4F6

border

#CBCED0

text

#0B0F11

muted

#7C7F80

Preview Lab

Preview with #51809D

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

Preview Lab → · Contrast checker → · Palette generator →