#637DEB#637DEB

#637DEB is a light, vivid blue. Relative luminance 0.233; OKLCH L 62.4% C 0.167 H 270.9°. Best body text is #000000 at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#637DEB
RGB	rgb(99, 125, 235)
HSL	hsl(229, 77%, 65%)
HSV	hsv(229, 58%, 92%)
CMYK	cmyk(57.9%, 46.8%, 0%, 7.8%)
CIE-LAB	lab(55.40, 22.84, -58.59)
CIE-LCH	lch(55.40, 62.89, 291.29°)
OKLab	oklab(62.39% 0.0025 -0.1673)
OKLCH	oklch(62.39% 0.167 270.9)
XYZ	xyz(27.4696, 23.3159, 81.6340)
Luminance	0.2332 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#637DEB #EBD163

analogous

#63C1EB #637DEB #8D63EB

triadic

#637DEB #EB637D #7DEB63

tetradic

#637DEB #EB63C1 #EBD163 #63EB8D

square

#637DEB #EB63C1 #EBD163 #63EB8D

split-complementary

#637DEB #EB8D63 #C1EB63

monochromatic

#1837BC #2D50E4 #637DEB #99AAF2 #CFD7F9

Accessibility & contrast

On white

3.71

#637DEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.66

#637DEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #637DEB

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##637DEB	#FFFFFF	#000000	##000000
##637DEB	1.00	3.71	5.66	5.66
#FFFFFF	3.71	1.00	21.00	21.00
#000000	5.66	21.00	1.00	1.00
##000000	5.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#488BEF

Deuteranopia (green-blind)

#337FE9

Tritanopia (blue-blind)

#0096A9

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #637deb;
/* rgb */ color: rgb(99, 125, 235);
/* oklch */ color: oklch(62.4% 0.167 270.9);

Tailwind

colors: {
  custom: {
    50: '#9aa2f2',
    500: '#637deb',
    950: '#000000',
  },
}

SCSS

$custom: #637deb;
$custom-light: #9aa2f2;
$custom-dark: #000000;

JSON

{
  "hex": "#637deb",
  "rgb": {
    "r": 99,
    "g": 125,
    "b": 235
  },
  "hsl": {
    "h": 228.529,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.62393,
    "c": 0.1673,
    "h": 270.9
  },
  "luminance": 0.23318
}

Semantic roles & 50–950 ramp

primary

#637DEB

secondary

#ECE3BE

accent

#B20CDA

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0F17

muted

#7F7E85

Preview Lab

Preview with #637DEB

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

Preview Lab → · Contrast checker → · Palette generator →