#638BBD#638BBD

#638BBD is a light, moderate cyan. Relative luminance 0.248; OKLCH L 62.8% C 0.088 H 254.5°. Best body text is #000000 at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#638BBD
RGB	rgb(99, 139, 189)
HSL	hsl(213, 41%, 56%)
HSV	hsv(213, 48%, 74%)
CMYK	cmyk(47.6%, 26.5%, 0%, 25.9%)
CIE-LAB	lab(56.87, -0.01, -30.37)
CIE-LCH	lch(56.87, 30.37, 269.98°)
OKLab	oklab(62.77% -0.0236 -0.0849)
OKLCH	oklch(62.77% 0.088 254.5)
XYZ	xyz(23.5604, 24.7904, 51.6778)
Luminance	0.2479 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638BBD #BD9563

analogous

#63B8BD #638BBD #6863BD

triadic

#638BBD #BD638B #8BBD63

tetradic

#638BBD #BD63B8 #BD9563 #63BD68

square

#638BBD #BD63B8 #BD9563 #63BD68

split-complementary

#638BBD #BD6863 #B8BD63

monochromatic

#314F74 #436C9F #638BBD #8EABCF #B9CBE1

Accessibility & contrast

On white

3.52

#638BBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.96

#638BBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638BBD

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638BBD	#FFFFFF	#000000	##000000
##638BBD	1.00	3.52	5.96	5.96
#FFFFFF	3.52	1.00	21.00	21.00
#000000	5.96	21.00	1.00	1.00
##000000	5.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788DBF

Deuteranopia (green-blind)

#6D85BC

Tritanopia (blue-blind)

#3C969C

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #638bbd;
/* rgb */ color: rgb(99, 139, 189);
/* oklch */ color: oklch(62.8% 0.088 254.5);

Tailwind

colors: {
  custom: {
    50: '#94acd1',
    500: '#638bbd',
    950: '#000000',
  },
}

SCSS

$custom: #638bbd;
$custom-light: #94acd1;
$custom-dark: #000000;

JSON

{
  "hex": "#638bbd",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 189
  },
  "hsl": {
    "h": 213.333,
    "s": 40.541,
    "l": 56.471
  },
  "oklch": {
    "l": 0.62774,
    "c": 0.08809,
    "h": 254.5
  },
  "luminance": 0.24792
}

Semantic roles & 50–950 ramp

primary

#638BBD

secondary

#D0C0AB

accent

#9B57D0

background

#F9FAFC

surface

#F2F4F9

border

#CCCED2

text

#0D1014

muted

#7E7F82

Preview Lab

Preview with #638BBD

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

Preview Lab → · Contrast checker → · Palette generator →