#637CED#637CED

#637CED is a light, vivid blue. Relative luminance 0.232; OKLCH L 62.3% C 0.171 H 271.3°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#637CED
RGB	rgb(99, 124, 237)
HSL	hsl(229, 79%, 66%)
HSV	hsv(229, 58%, 93%)
CMYK	cmyk(58.2%, 47.7%, 0%, 7.1%)
CIE-LAB	lab(55.26, 24.09, -59.93)
CIE-LCH	lch(55.26, 64.59, 291.90°)
OKLab	oklab(62.33% 0.0038 -0.1712)
OKLCH	oklch(62.33% 0.171 271.3)
XYZ	xyz(27.6342, 23.1802, 83.1223)
Luminance	0.2318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637CED #EDD463

analogous

#63C1ED #637CED #8F63ED

triadic

#637CED #ED637C #7CED63

tetradic

#637CED #ED63C1 #EDD463 #63ED8F

square

#637CED #ED63C1 #EDD463 #63ED8F

split-complementary

#637CED #ED8F63 #C1ED63

monochromatic

#1635C0 #2C4EE7 #637CED #9AAAF3 #D1D8FA

Accessibility & contrast

On white

3.73

#637CED on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#637CED on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #637CED

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637CED	#FFFFFF	#000000	##000000
##637CED	1.00	3.73	5.64	5.64
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#448BF1

Deuteranopia (green-blind)

#2D7FEB

Tritanopia (blue-blind)

#0096A9

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #637ced;
/* rgb */ color: rgb(99, 124, 237);
/* oklch */ color: oklch(62.3% 0.171 271.3);

Tailwind

colors: {
  custom: {
    50: '#9aa1f3',
    500: '#637ced',
    950: '#000000',
  },
}

SCSS

$custom: #637ced;
$custom-light: #9aa1f3;
$custom-dark: #000000;

JSON

{
  "hex": "#637ced",
  "rgb": {
    "r": 99,
    "g": 124,
    "b": 237
  },
  "hsl": {
    "h": 229.13,
    "s": 79.31,
    "l": 65.882
  },
  "oklch": {
    "l": 0.62326,
    "c": 0.17126,
    "h": 271.3
  },
  "luminance": 0.23182
}

Semantic roles & 50–950 ramp

primary

#637CED

secondary

#EDE4BF

accent

#B60ADC

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0E17

muted

#7F7E85

Preview Lab

Preview with #637CED

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

Preview Lab → · Contrast checker → · Palette generator →