#638DAD#638DAD

#638DAD is a light, moderate cyan. Relative luminance 0.247; OKLCH L 62.5% C 0.067 H 242.0°. Best body text is #000000 at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#638DAD
RGB	rgb(99, 141, 173)
HSL	hsl(206, 31%, 53%)
HSV	hsv(206, 43%, 68%)
CMYK	cmyk(42.8%, 18.5%, 0%, 32.2%)
CIE-LAB	lab(56.80, -5.82, -21.36)
CIE-LCH	lch(56.80, 22.14, 254.76°)
OKLab	oklab(62.51% -0.0315 -0.0591)
OKLCH	oklch(62.51% 0.067 242)
XYZ	xyz(22.2107, 24.7181, 43.1278)
Luminance	0.2472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638DAD #AD8363

analogous

#63ADA8 #638DAD #6368AD

triadic

#638DAD #AD638D #8DAD63

tetradic

#638DAD #A863AD #AD8363 #68AD63

square

#638DAD #A863AD #AD8363 #68AD63

split-complementary

#638DAD #AD6368 #ADA863

monochromatic

#344E62 #496E8A #638DAD #8BAAC2 #B3C8D7

Accessibility & contrast

On white

3.53

#638DAD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.94

#638DAD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638DAD

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638DAD	#FFFFFF	#000000	##000000
##638DAD	1.00	3.53	5.94	5.94
#FFFFFF	3.53	1.00	21.00	21.00
#000000	5.94	21.00	1.00	1.00
##000000	5.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F8DAF

Deuteranopia (green-blind)

#7685AC

Tritanopia (blue-blind)

#469598

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #638dad;
/* rgb */ color: rgb(99, 141, 173);
/* oklch */ color: oklch(62.5% 0.067 242.0);

Tailwind

colors: {
  custom: {
    50: '#93aec5',
    500: '#638dad',
    950: '#000000',
  },
}

SCSS

$custom: #638dad;
$custom-light: #93aec5;
$custom-dark: #000000;

JSON

{
  "hex": "#638dad",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 173
  },
  "hsl": {
    "h": 205.946,
    "s": 31.092,
    "l": 53.333
  },
  "oklch": {
    "l": 0.62506,
    "c": 0.06702,
    "h": 242
  },
  "luminance": 0.2472
}

Semantic roles & 50–950 ramp

primary

#638DAD

secondary

#C6B4A6

accent

#8D61C7

background

#F9FAFC

surface

#F1F4F8

border

#CBCED1

text

#0D1013

muted

#7E7F82

Preview Lab

Preview with #638DAD

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

Preview Lab → · Contrast checker → · Palette generator →