#637BED#637BED

#637BED is a light, vivid blue. Relative luminance 0.229; OKLCH L 62.1% C 0.173 H 271.6°. Best body text is #000000 at 5.59:1 contrast (WCAG AA passes).

Color values

HEX	#637BED
RGB	rgb(99, 123, 237)
HSL	hsl(230, 79%, 66%)
HSV	hsv(230, 58%, 93%)
CMYK	cmyk(58.2%, 48.1%, 0%, 7.1%)
CIE-LAB	lab(55.00, 24.70, -60.34)
CIE-LCH	lch(55.00, 65.20, 292.26°)
OKLab	oklab(62.13% 0.0048 -0.1724)
OKLCH	oklch(62.13% 0.173 271.6)
XYZ	xyz(27.5095, 22.9308, 83.0808)
Luminance	0.2293 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637BED #EDD563

analogous

#63C0ED #637BED #9063ED

triadic

#637BED #ED637B #7BED63

tetradic

#637BED #ED63C0 #EDD563 #63ED90

square

#637BED #ED63C0 #EDD563 #63ED90

split-complementary

#637BED #ED9063 #C0ED63

monochromatic

#1634C0 #2C4DE7 #637BED #9AA9F3 #D1D8FA

Accessibility & contrast

On white

3.76

#637BED on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.59

#637BED on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #637BED

5.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637BED	#FFFFFF	#000000	##000000
##637BED	1.00	3.76	5.59	5.59
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.59	21.00	1.00	1.00
##000000	5.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#428AF1

Deuteranopia (green-blind)

#2A7EEB

Tritanopia (blue-blind)

#0095A9

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #637bed;
/* rgb */ color: rgb(99, 123, 237);
/* oklch */ color: oklch(62.1% 0.173 271.6);

Tailwind

colors: {
  custom: {
    50: '#9aa0f3',
    500: '#637bed',
    950: '#000000',
  },
}

SCSS

$custom: #637bed;
$custom-light: #9aa0f3;
$custom-dark: #000000;

JSON

{
  "hex": "#637bed",
  "rgb": {
    "r": 99,
    "g": 123,
    "b": 237
  },
  "hsl": {
    "h": 229.565,
    "s": 79.31,
    "l": 65.882
  },
  "oklch": {
    "l": 0.62131,
    "c": 0.17251,
    "h": 271.6
  },
  "luminance": 0.22933
}

Semantic roles & 50–950 ramp

primary

#637BED

secondary

#EDE5BF

accent

#B70ADC

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0E17

muted

#7F7E85

Preview Lab

Preview with #637BED

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

Preview Lab → · Contrast checker → · Palette generator →