#638397#638397

#638397 is a mid, muted cyan. Relative luminance 0.211; OKLCH L 59.3% C 0.048 H 236.1°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#638397
RGB	rgb(99, 131, 151)
HSL	hsl(203, 21%, 49%)
HSV	hsv(203, 34%, 59%)
CMYK	cmyk(34.4%, 13.2%, 0%, 40.8%)
CIE-LAB	lab(53.08, -6.19, -14.36)
CIE-LCH	lch(53.08, 15.64, 246.67°)
OKLab	oklab(59.3% -0.0265 -0.0394)
OKLCH	oklch(59.3% 0.048 236.1)
XYZ	xyz(18.8460, 21.1187, 32.3554)
Luminance	0.2112 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638397 #977763

analogous

#639791 #638397 #636997

triadic

#638397 #976383 #839763

tetradic

#638397 #916397 #977763 #699763

square

#638397 #916397 #977763 #699763

split-complementary

#638397 #976369 #979163

monochromatic

#33434D #4B6372 #638397 #87A0B0 #ACBEC9

Accessibility & contrast

On white

4.02

#638397 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#638397 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638397

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638397	#FFFFFF	#000000	##000000
##638397	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8298

Deuteranopia (green-blind)

#737C97

Tritanopia (blue-blind)

#528889

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #638397;
/* rgb */ color: rgb(99, 131, 151);
/* oklch */ color: oklch(59.3% 0.048 236.1);

Tailwind

colors: {
  custom: {
    50: '#91a7b5',
    500: '#638397',
    950: '#000000',
  },
}

SCSS

$custom: #638397;
$custom-light: #91a7b5;
$custom-dark: #000000;

JSON

{
  "hex": "#638397",
  "rgb": {
    "r": 99,
    "g": 131,
    "b": 151
  },
  "hsl": {
    "h": 203.077,
    "s": 20.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.59298,
    "c": 0.04752,
    "h": 236.1
  },
  "luminance": 0.2112
}

Semantic roles & 50–950 ramp

primary

#638397

secondary

#B7A89F

accent

#8A6ABD

background

#F9FAFB

surface

#F1F4F6

border

#CBCED0

text

#0D0F11

muted

#7E7F80

Preview Lab

Preview with #638397

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

Preview Lab → · Contrast checker → · Palette generator →