#638FCD#638FCD

#638FCD is a light, moderate blue. Relative luminance 0.267; OKLCH L 64.4% C 0.105 H 257.1°. Best body text is #000000 at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#638FCD
RGB	rgb(99, 143, 205)
HSL	hsl(215, 51%, 60%)
HSV	hsv(215, 52%, 80%)
CMYK	cmyk(51.7%, 30.2%, 0%, 19.6%)
CIE-LAB	lab(58.70, 2.53, -36.56)
CIE-LCH	lch(58.70, 36.65, 273.96°)
OKLab	oklab(64.44% -0.0236 -0.1027)
OKLCH	oklch(64.44% 0.105 257.1)
XYZ	xyz(25.9837, 26.7034, 61.5308)
Luminance	0.2671 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638FCD #CDA163

analogous

#63C4CD #638FCD #6C63CD

triadic

#638FCD #CD638F #8FCD63

tetradic

#638FCD #CD63C4 #CDA163 #63CD6C

square

#638FCD #CD63C4 #CDA163 #63CD6C

split-complementary

#638FCD #CD6C63 #C4CD63

monochromatic

#2C538A #3B6FB8 #638FCD #91B0DC #C0D2EB

Accessibility & contrast

On white

3.31

#638FCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.34

#638FCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638FCD

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638FCD	#FFFFFF	#000000	##000000
##638FCD	1.00	3.31	6.34	6.34
#FFFFFF	3.31	1.00	21.00	21.00
#000000	6.34	21.00	1.00	1.00
##000000	6.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7793D0

Deuteranopia (green-blind)

#6A89CC

Tritanopia (blue-blind)

#2D9DA5

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #638fcd;
/* rgb */ color: rgb(99, 143, 205);
/* oklch */ color: oklch(64.4% 0.105 257.1);

Tailwind

colors: {
  custom: {
    50: '#96afdc',
    500: '#638fcd',
    950: '#000000',
  },
}

SCSS

$custom: #638fcd;
$custom-light: #96afdc;
$custom-dark: #000000;

JSON

{
  "hex": "#638fcd",
  "rgb": {
    "r": 99,
    "g": 143,
    "b": 205
  },
  "hsl": {
    "h": 215.094,
    "s": 51.456,
    "l": 59.608
  },
  "oklch": {
    "l": 0.64436,
    "c": 0.10541,
    "h": 257.1
  },
  "luminance": 0.26705
}

Semantic roles & 50–950 ramp

primary

#638FCD

secondary

#DAC9B1

accent

#A04DDB

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638FCD

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

Preview Lab → · Contrast checker → · Palette generator →