#638FCC#638FCC

#638FCC is a light, moderate cyan. Relative luminance 0.267; OKLCH L 64.4% C 0.104 H 256.7°. Best body text is #000000 at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#638FCC
RGB	rgb(99, 143, 204)
HSL	hsl(215, 51%, 59%)
HSV	hsv(215, 51%, 80%)
CMYK	cmyk(51.5%, 29.9%, 0%, 20%)
CIE-LAB	lab(58.65, 2.22, -36.07)
CIE-LCH	lch(58.65, 36.14, 273.52°)
OKLab	oklab(64.39% -0.0239 -0.1013)
OKLCH	oklch(64.39% 0.104 256.7)
XYZ	xyz(25.8634, 26.6553, 60.8971)
Luminance	0.2666 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638FCC #CCA063

analogous

#63C4CC #638FCC #6C63CC

triadic

#638FCC #CC638F #8FCC63

tetradic

#638FCC #CC63C4 #CCA063 #63CC6C

square

#638FCC #CC63C4 #CCA063 #63CC6C

split-complementary

#638FCC #CC6C63 #C4CC63

monochromatic

#2C5388 #3C6FB6 #638FCC #91B0DB #BFD1EA

Accessibility & contrast

On white

3.32

#638FCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.33

#638FCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638FCC

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638FCC	#FFFFFF	#000000	##000000
##638FCC	1.00	3.32	6.33	6.33
#FFFFFF	3.32	1.00	21.00	21.00
#000000	6.33	21.00	1.00	1.00
##000000	6.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7793CF

Deuteranopia (green-blind)

#6A89CB

Tritanopia (blue-blind)

#2E9DA5

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #638fcc;
/* rgb */ color: rgb(99, 143, 204);
/* oklch */ color: oklch(64.4% 0.104 256.7);

Tailwind

colors: {
  custom: {
    50: '#95afdc',
    500: '#638fcc',
    950: '#000000',
  },
}

SCSS

$custom: #638fcc;
$custom-light: #95afdc;
$custom-dark: #000000;

JSON

{
  "hex": "#638fcc",
  "rgb": {
    "r": 99,
    "g": 143,
    "b": 204
  },
  "hsl": {
    "h": 214.857,
    "s": 50.725,
    "l": 59.412
  },
  "oklch": {
    "l": 0.64386,
    "c": 0.10408,
    "h": 256.7
  },
  "luminance": 0.26657
}

Semantic roles & 50–950 ramp

primary

#638FCC

secondary

#DAC9B1

accent

#9F4EDA

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638FCC

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

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