#51789B#51789B

#51789B is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.8% C 0.070 H 246.5°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#51789B
RGB	rgb(81, 120, 155)
HSL	hsl(208, 31%, 46%)
HSV	hsv(208, 48%, 61%)
CMYK	cmyk(47.7%, 22.6%, 0%, 39.2%)
CIE-LAB	lab(48.94, -3.71, -23.11)
CIE-LCH	lch(48.94, 23.41, 260.88°)
OKLab	oklab(55.81% -0.0279 -0.0643)
OKLCH	oklch(55.81% 0.07 246.5)
XYZ	xyz(16.0242, 17.5477, 33.5466)
Luminance	0.1755 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51789B #9B7451

analogous

#519B99 #51789B #51539B

triadic

#51789B #9B5178 #789B51

tetradic

#51789B #99519B #9B7451 #539B51

square

#51789B #99519B #9B7451 #539B51

split-complementary

#51789B #9B5153 #9B9951

monochromatic

#273A4B #3C5973 #51789B #7396B6 #9BB4CB

Accessibility & contrast

On white

4.66

#51789B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#51789B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #51789B

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51789B	#FFFFFF	#000000	##FFFFFF
##51789B	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A799D

Deuteranopia (green-blind)

#60719A

Tritanopia (blue-blind)

#318084

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #51789b;
/* rgb */ color: rgb(81, 120, 155);
/* oklch */ color: oklch(55.8% 0.070 246.5);

Tailwind

colors: {
  custom: {
    50: '#869eb8',
    500: '#51789b',
    950: '#000000',
  },
}

SCSS

$custom: #51789b;
$custom-light: #869eb8;
$custom-dark: #000000;

JSON

{
  "hex": "#51789b",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 155
  },
  "hsl": {
    "h": 208.378,
    "s": 31.356,
    "l": 46.275
  },
  "oklch": {
    "l": 0.55807,
    "c": 0.07015,
    "h": 246.5
  },
  "luminance": 0.17549
}

Semantic roles & 50–950 ramp

primary

#51789B

secondary

#B8A390

accent

#9160C8

background

#F8F9FB

surface

#F0F2F6

border

#CBCCD0

text

#0B0E11

muted

#7C7E80

Preview Lab

Preview with #51789B

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

Preview Lab → · Contrast checker → · Palette generator →