#638DCD#638DCD

#638DCD is a light, moderate blue. Relative luminance 0.261; OKLCH L 64.0% C 0.107 H 258.6°. Best body text is #000000 at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#638DCD
RGB	rgb(99, 141, 205)
HSL	hsl(216, 51%, 60%)
HSV	hsv(216, 52%, 80%)
CMYK	cmyk(51.7%, 31.2%, 0%, 19.6%)
CIE-LAB	lab(58.14, 3.70, -37.44)
CIE-LCH	lch(58.14, 37.62, 275.64°)
OKLab	oklab(64% -0.0213 -0.1053)
OKLCH	oklch(64% 0.107 258.6)
XYZ	xyz(25.6862, 26.1083, 61.4316)
Luminance	0.2611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638DCD #CDA363

analogous

#63C2CD #638DCD #6E63CD

triadic

#638DCD #CD638D #8DCD63

tetradic

#638DCD #CD63C2 #CDA363 #63CD6E

square

#638DCD #CD63C2 #CDA363 #63CD6E

split-complementary

#638DCD #CD6E63 #C2CD63

monochromatic

#2C518A #3B6CB8 #638DCD #91AFDC #C0D1EB

Accessibility & contrast

On white

3.38

#638DCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.22

#638DCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638DCD

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638DCD	#FFFFFF	#000000	##000000
##638DCD	1.00	3.38	6.22	6.22
#FFFFFF	3.38	1.00	21.00	21.00
#000000	6.22	21.00	1.00	1.00
##000000	6.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7491D0

Deuteranopia (green-blind)

#6787CC

Tritanopia (blue-blind)

#2E9BA4

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #638dcd;
/* rgb */ color: rgb(99, 141, 205);
/* oklch */ color: oklch(64.0% 0.107 258.6);

Tailwind

colors: {
  custom: {
    50: '#96aedc',
    500: '#638dcd',
    950: '#000000',
  },
}

SCSS

$custom: #638dcd;
$custom-light: #96aedc;
$custom-dark: #000000;

JSON

{
  "hex": "#638dcd",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 205
  },
  "hsl": {
    "h": 216.226,
    "s": 51.456,
    "l": 59.608
  },
  "oklch": {
    "l": 0.64,
    "c": 0.1074,
    "h": 258.6
  },
  "luminance": 0.2611
}

Semantic roles & 50–950 ramp

primary

#638DCD

secondary

#DACAB1

accent

#A34DDB

background

#F9FAFD

surface

#F2F4FB

border

#CCCED4

text

#0E1015

muted

#7E7F83

Preview Lab

Preview with #638DCD

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

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