#637880#637880

#637880 is a mid, muted cyan. Relative luminance 0.176; OKLCH L 55.9% C 0.028 H 222.9°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#637880
RGB	rgb(99, 120, 128)
HSL	hsl(197, 13%, 45%)
HSV	hsv(197, 23%, 50%)
CMYK	cmyk(22.7%, 6.3%, 0%, 49.8%)
CIE-LAB	lab(49.06, -5.76, -6.93)
CIE-LCH	lch(49.06, 9.01, 230.24°)
OKLab	oklab(55.86% -0.0202 -0.0188)
OKLCH	oklch(55.86% 0.028 222.9)
XYZ	xyz(15.7572, 17.6436, 22.9932)
Luminance	0.1764 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637880 #806B63

analogous

#63807A #637880 #636A80

triadic

#637880 #806378 #788063

tetradic

#637880 #7A6380 #806B63 #6A8063

square

#637880 #7A6380 #806B63 #6A8063

split-complementary

#637880 #80636A #807A63

monochromatic

#2E373B #48585D #637880 #82969E #A4B3B9

Accessibility & contrast

On white

4.64

#637880 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#637880 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #637880

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637880	#FFFFFF	#000000	##FFFFFF
##637880	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#737780

Deuteranopia (green-blind)

#6F7380

Tritanopia (blue-blind)

#5B7B7A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #637880;
/* rgb */ color: rgb(99, 120, 128);
/* oklch */ color: oklch(55.9% 0.028 222.9);

Tailwind

colors: {
  custom: {
    50: '#909fa4',
    500: '#637880',
    950: '#000000',
  },
}

SCSS

$custom: #637880;
$custom-light: #909fa4;
$custom-dark: #000000;

JSON

{
  "hex": "#637880",
  "rgb": {
    "r": 99,
    "g": 120,
    "b": 128
  },
  "hsl": {
    "h": 196.552,
    "s": 12.775,
    "l": 44.51
  },
  "oklch": {
    "l": 0.55863,
    "c": 0.02761,
    "h": 222.9
  },
  "luminance": 0.17644
}

Semantic roles & 50–950 ramp

primary

#637880

secondary

#A89C97

accent

#8572B6

background

#F8F9FA

surface

#F0F2F4

border

#CBCCCE

text

#0C0E0F

muted

#7D7E7F

Preview Lab

Preview with #637880

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

Preview Lab → · Contrast checker → · Palette generator →