#638DA8#638DA8

#638DA8 is a light, moderate cyan. Relative luminance 0.245; OKLCH L 62.3% C 0.062 H 237.3°. Best body text is #000000 at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#638DA8
RGB	rgb(99, 141, 168)
HSL	hsl(203, 28%, 52%)
HSV	hsv(203, 41%, 66%)
CMYK	cmyk(41.1%, 16.1%, 0%, 34.1%)
CIE-LAB	lab(56.61, -7.22, -18.79)
CIE-LCH	lch(56.61, 20.13, 248.97°)
OKLab	oklab(62.3% -0.0333 -0.0519)
OKLCH	oklch(62.3% 0.062 237.3)
XYZ	xyz(21.7360, 24.5282, 40.6273)
Luminance	0.2453 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638DA8 #A87E63

analogous

#63A8A0 #638DA8 #636BA8

triadic

#638DA8 #A8638D #8DA863

tetradic

#638DA8 #A063A8 #A87E63 #6BA863

square

#638DA8 #A063A8 #A87E63 #6BA863

split-complementary

#638DA8 #A8636B #A8A063

monochromatic

#344D5D #4A6D84 #638DA8 #8AAABE #B2C6D4

Accessibility & contrast

On white

3.56

#638DA8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.91

#638DA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638DA8

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638DA8	#FFFFFF	#000000	##000000
##638DA8	1.00	3.56	5.91	5.91
#FFFFFF	3.56	1.00	21.00	21.00
#000000	5.91	21.00	1.00	1.00
##000000	5.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#818CA9

Deuteranopia (green-blind)

#7784A8

Tritanopia (blue-blind)

#499496

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #638da8;
/* rgb */ color: rgb(99, 141, 168);
/* oklch */ color: oklch(62.3% 0.062 237.3);

Tailwind

colors: {
  custom: {
    50: '#92aec2',
    500: '#638da8',
    950: '#000000',
  },
}

SCSS

$custom: #638da8;
$custom-light: #92aec2;
$custom-dark: #000000;

JSON

{
  "hex": "#638da8",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 168
  },
  "hsl": {
    "h": 203.478,
    "s": 28.395,
    "l": 52.353
  },
  "oklch": {
    "l": 0.62296,
    "c": 0.06167,
    "h": 237.3
  },
  "luminance": 0.2453
}

Semantic roles & 50–950 ramp

primary

#638DA8

secondary

#C2B0A4

accent

#8963C5

background

#F9FAFB

surface

#F1F4F7

border

#CBCED0

text

#0D1012

muted

#7E7F81

Preview Lab

Preview with #638DA8

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

Preview Lab → · Contrast checker → · Palette generator →