#51637B#51637B

#51637B is a mid, muted cyan. Relative luminance 0.121; OKLCH L 49.4% C 0.044 H 255.7°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#51637B
RGB	rgb(81, 99, 123)
HSL	hsl(214, 21%, 40%)
HSV	hsv(214, 34%, 48%)
CMYK	cmyk(34.1%, 19.5%, 0%, 51.8%)
CIE-LAB	lab(41.38, -0.53, -15.64)
CIE-LCH	lch(41.38, 15.65, 268.06°)
OKLab	oklab(49.43% -0.011 -0.0431)
OKLCH	oklch(49.43% 0.044 255.7)
XYZ	xyz(11.4293, 12.1026, 20.4689)
Luminance	0.1210 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51637B #7B6951

analogous

#51787B #51637B #54517B

triadic

#51637B #7B5163 #637B51

tetradic

#51637B #7B5178 #7B6951 #517B54

square

#51637B #7B5178 #7B6951 #517B54

split-complementary

#51637B #7B5451 #787B51

monochromatic

#202831 #394556 #51637B #6B819E #90A0B6

Accessibility & contrast

On white

6.14

#51637B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#51637B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51637B

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51637B	#FFFFFF	#000000	##FFFFFF
##51637B	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A647C

Deuteranopia (green-blind)

#56607A

Tritanopia (blue-blind)

#44686B

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #51637b;
/* rgb */ color: rgb(81, 99, 123);
/* oklch */ color: oklch(49.4% 0.044 255.7);

Tailwind

colors: {
  custom: {
    50: '#838fa1',
    500: '#51637b',
    950: '#000000',
  },
}

SCSS

$custom: #51637b;
$custom-light: #838fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#51637b",
  "rgb": {
    "r": 81,
    "g": 99,
    "b": 123
  },
  "hsl": {
    "h": 214.286,
    "s": 20.588,
    "l": 40
  },
  "oklch": {
    "l": 0.49427,
    "c": 0.04446,
    "h": 255.7
  },
  "luminance": 0.12103
}

Semantic roles & 50–950 ramp

primary

#51637B

secondary

#A39684

accent

#9A6BBD

background

#F8F8F9

surface

#EFF0F2

border

#CACBCC

text

#0B0C0F

muted

#7C7D7E

Preview Lab

Preview with #51637B

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

Preview Lab → · Contrast checker → · Palette generator →