#637DEC#637DEC

#637DEC is a light, vivid blue. Relative luminance 0.234; OKLCH L 62.5% C 0.169 H 270.9°. Best body text is #000000 at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#637DEC
RGB	rgb(99, 125, 236)
HSL	hsl(229, 78%, 66%)
HSV	hsv(229, 58%, 93%)
CMYK	cmyk(58.1%, 47%, 0%, 7.5%)
CIE-LAB	lab(55.46, 23.16, -59.06)
CIE-LCH	lch(55.46, 63.44, 291.41°)
OKLab	oklab(62.46% 0.0027 -0.1686)
OKLCH	oklch(62.46% 0.169 270.9)
XYZ	xyz(27.6145, 23.3738, 82.3970)
Luminance	0.2338 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637DEC #ECD263

analogous

#63C1EC #637DEC #8D63EC

triadic

#637DEC #EC637D #7DEC63

tetradic

#637DEC #EC63C1 #ECD263 #63EC8D

square

#637DEC #EC63C1 #ECD263 #63EC8D

split-complementary

#637DEC #EC8D63 #C1EC63

monochromatic

#1737BE #2C50E5 #637DEC #9AAAF3 #D0D8F9

Accessibility & contrast

On white

3.70

#637DEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.68

#637DEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #637DEC

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637DEC	#FFFFFF	#000000	##000000
##637DEC	1.00	3.70	5.68	5.68
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.68	21.00	1.00	1.00
##000000	5.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#478BF0

Deuteranopia (green-blind)

#317FEA

Tritanopia (blue-blind)

#0096A9

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #637dec;
/* rgb */ color: rgb(99, 125, 236);
/* oklch */ color: oklch(62.5% 0.169 270.9);

Tailwind

colors: {
  custom: {
    50: '#9aa2f3',
    500: '#637dec',
    950: '#000000',
  },
}

SCSS

$custom: #637dec;
$custom-light: #9aa2f3;
$custom-dark: #000000;

JSON

{
  "hex": "#637dec",
  "rgb": {
    "r": 99,
    "g": 125,
    "b": 236
  },
  "hsl": {
    "h": 228.613,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.62457,
    "c": 0.16866,
    "h": 270.9
  },
  "luminance": 0.23376
}

Semantic roles & 50–950 ramp

primary

#637DEC

secondary

#ECE4BF

accent

#B30BDB

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0F17

muted

#7F7E85

Preview Lab

Preview with #637DEC

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

Preview Lab → · Contrast checker → · Palette generator →