#638FAC#638FAC

#638FAC is a light, moderate cyan. Relative luminance 0.253; OKLCH L 62.9% C 0.065 H 238.0°. Best body text is #000000 at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#638FAC
RGB	rgb(99, 143, 172)
HSL	hsl(204, 31%, 53%)
HSV	hsv(204, 42%, 67%)
CMYK	cmyk(42.4%, 16.9%, 0%, 32.5%)
CIE-LAB	lab(57.34, -7.23, -19.96)
CIE-LCH	lch(57.34, 21.23, 250.09°)
OKLab	oklab(62.92% -0.0344 -0.0552)
OKLCH	oklch(62.92% 0.065 238)
XYZ	xyz(22.4119, 25.2747, 42.7193)
Luminance	0.2528 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638FAC #AC8063

analogous

#63ACA5 #638FAC #636AAC

triadic

#638FAC #AC638F #8FAC63

tetradic

#638FAC #A563AC #AC8063 #6AAC63

square

#638FAC #A563AC #AC8063 #6AAC63

split-complementary

#638FAC #AC636A #ACA563

monochromatic

#344F61 #496F89 #638FAC #8BACC1 #B3C8D7

Accessibility & contrast

On white

3.47

#638FAC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.06

#638FAC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638FAC

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638FAC	#FFFFFF	#000000	##000000
##638FAC	1.00	3.47	6.06	6.06
#FFFFFF	3.47	1.00	21.00	21.00
#000000	6.06	21.00	1.00	1.00
##000000	6.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#828EAD

Deuteranopia (green-blind)

#7886AC

Tritanopia (blue-blind)

#469698

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #638fac;
/* rgb */ color: rgb(99, 143, 172);
/* oklch */ color: oklch(62.9% 0.065 238.0);

Tailwind

colors: {
  custom: {
    50: '#93afc4',
    500: '#638fac',
    950: '#000000',
  },
}

SCSS

$custom: #638fac;
$custom-light: #93afc4;
$custom-dark: #000000;

JSON

{
  "hex": "#638fac",
  "rgb": {
    "r": 99,
    "g": 143,
    "b": 172
  },
  "hsl": {
    "h": 203.836,
    "s": 30.544,
    "l": 53.137
  },
  "oklch": {
    "l": 0.62922,
    "c": 0.06505,
    "h": 238
  },
  "luminance": 0.25276
}

Semantic roles & 50–950 ramp

primary

#638FAC

secondary

#C5B2A6

accent

#8961C7

background

#F9FAFC

surface

#F1F4F8

border

#CBCED1

text

#0D1012

muted

#7E7F81

Preview Lab

Preview with #638FAC

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

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