#51758D#51758D

#51758D is a mid, muted cyan. Relative luminance 0.164; OKLCH L 54.5% C 0.056 H 238.3°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#51758D
RGB	rgb(81, 117, 141)
HSL	hsl(204, 27%, 44%)
HSV	hsv(204, 43%, 55%)
CMYK	cmyk(42.6%, 17%, 0%, 44.7%)
CIE-LAB	lab(47.49, -6.11, -17.10)
CIE-LCH	lch(47.49, 18.16, 250.32°)
OKLab	oklab(54.47% -0.0292 -0.0473)
OKLCH	oklch(54.47% 0.056 238.3)
XYZ	xyz(14.5607, 16.3941, 27.5913)
Luminance	0.1640 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51758D #8D6951

analogous

#518D87 #51758D #51578D

triadic

#51758D #8D5175 #758D51

tetradic

#51758D #87518D #8D6951 #578D51

square

#51758D #87518D #8D6951 #578D51

split-complementary

#51758D #8D5157 #8D8751

monochromatic

#24343F #3B5566 #51758D #6F94AC #96B1C3

Accessibility & contrast

On white

4.91

#51758D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#51758D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51758D

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51758D	#FFFFFF	#000000	##FFFFFF
##51758D	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A748E

Deuteranopia (green-blind)

#626E8D

Tritanopia (blue-blind)

#3A7B7D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #51758d;
/* rgb */ color: rgb(81, 117, 141);
/* oklch */ color: oklch(54.5% 0.056 238.3);

Tailwind

colors: {
  custom: {
    50: '#859cae',
    500: '#51758d',
    950: '#000000',
  },
}

SCSS

$custom: #51758d;
$custom-light: #859cae;
$custom-dark: #000000;

JSON

{
  "hex": "#51758d",
  "rgb": {
    "r": 81,
    "g": 117,
    "b": 141
  },
  "hsl": {
    "h": 204,
    "s": 27.027,
    "l": 43.529
  },
  "oklch": {
    "l": 0.54473,
    "c": 0.05554,
    "h": 238.3
  },
  "luminance": 0.16395
}

Semantic roles & 50–950 ramp

primary

#51758D

secondary

#AF998A

accent

#8A64C3

background

#F8F9FA

surface

#EFF2F4

border

#CACCCE

text

#0B0E10

muted

#7C7E7F

Preview Lab

Preview with #51758D

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

Preview Lab → · Contrast checker → · Palette generator →