#637AED#637AED

#637AED is a mid, vivid blue. Relative luminance 0.227; OKLCH L 61.9% C 0.174 H 271.9°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#637AED
RGB	rgb(99, 122, 237)
HSL	hsl(230, 79%, 66%)
HSV	hsv(230, 58%, 93%)
CMYK	cmyk(58.2%, 48.5%, 0%, 7.1%)
CIE-LAB	lab(54.75, 25.31, -60.75)
CIE-LCH	lch(54.75, 65.81, 292.61°)
OKLab	oklab(61.94% 0.0058 -0.1737)
OKLCH	oklch(61.94% 0.174 271.9)
XYZ	xyz(27.3861, 22.6840, 83.0396)
Luminance	0.2269 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637AED #EDD663

analogous

#63BFED #637AED #9163ED

triadic

#637AED #ED637A #7AED63

tetradic

#637AED #ED63BF #EDD663 #63ED91

square

#637AED #ED63BF #EDD663 #63ED91

split-complementary

#637AED #ED9163 #BFED63

monochromatic

#1632C0 #2C4BE7 #637AED #9AA9F3 #D1D8FA

Accessibility & contrast

On white

3.79

#637AED on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#637AED on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #637AED

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637AED	#FFFFFF	#000000	##000000
##637AED	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F89F1

Deuteranopia (green-blind)

#277DEB

Tritanopia (blue-blind)

#0094A8

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #637aed;
/* rgb */ color: rgb(99, 122, 237);
/* oklch */ color: oklch(61.9% 0.174 271.9);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#637aed",
  "rgb": {
    "r": 99,
    "g": 122,
    "b": 237
  },
  "hsl": {
    "h": 230,
    "s": 79.31,
    "l": 65.882
  },
  "oklch": {
    "l": 0.61937,
    "c": 0.17376,
    "h": 271.9
  },
  "luminance": 0.22686
}

Semantic roles & 50–950 ramp

primary

#637AED

secondary

#EDE5BF

accent

#B90ADC

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0E17

muted

#7F7E85

Preview Lab

Preview with #637AED

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

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