#51739D#51739D

#51739D is a mid, moderate cyan. Relative luminance 0.164; OKLCH L 54.7% C 0.077 H 254.2°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#51739D
RGB	rgb(81, 115, 157)
HSL	hsl(213, 32%, 47%)
HSV	hsv(213, 48%, 62%)
CMYK	cmyk(48.4%, 26.8%, 0%, 38.4%)
CIE-LAB	lab(47.55, -0.13, -26.44)
CIE-LCH	lch(47.55, 26.44, 269.72°)
OKLab	oklab(54.74% -0.0209 -0.0739)
OKLCH	oklch(54.74% 0.077 254.2)
XYZ	xyz(15.6078, 16.4441, 34.2433)
Luminance	0.1645 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51739D #9D7B51

analogous

#51999D #51739D #55519D

triadic

#51739D #9D5173 #739D51

tetradic

#51739D #9D5199 #9D7B51 #519D55

square

#51739D #9D5199 #9D7B51 #519D55

split-complementary

#51739D #9D5551 #999D51

monochromatic

#27384C #3C5575 #51739D #7492B7 #9CB2CC

Accessibility & contrast

On white

4.90

#51739D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#51739D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51739D

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51739D	#FFFFFF	#000000	##FFFFFF
##51739D	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#63759F

Deuteranopia (green-blind)

#596D9C

Tritanopia (blue-blind)

#307C82

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #51739d;
/* rgb */ color: rgb(81, 115, 157);
/* oklch */ color: oklch(54.7% 0.077 254.2);

Tailwind

colors: {
  custom: {
    50: '#869bba',
    500: '#51739d',
    950: '#000000',
  },
}

SCSS

$custom: #51739d;
$custom-light: #869bba;
$custom-dark: #000000;

JSON

{
  "hex": "#51739d",
  "rgb": {
    "r": 81,
    "g": 115,
    "b": 157
  },
  "hsl": {
    "h": 213.158,
    "s": 31.933,
    "l": 46.667
  },
  "oklch": {
    "l": 0.54742,
    "c": 0.07678,
    "h": 254.2
  },
  "luminance": 0.16445
}

Semantic roles & 50–950 ramp

primary

#51739D

secondary

#B9A791

accent

#9960C8

background

#F8F9FB

surface

#F0F2F6

border

#CBCCD0

text

#0B0E11

muted

#7C7E80

Preview Lab

Preview with #51739D

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

Preview Lab → · Contrast checker → · Palette generator →