#636EEB#636EEB

#636EEB is a mid, vivid blue. Relative luminance 0.198; OKLCH L 59.5% C 0.186 H 275.4°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#636EEB
RGB	rgb(99, 110, 235)
HSL	hsl(235, 77%, 65%)
HSV	hsv(235, 58%, 92%)
CMYK	cmyk(57.9%, 53.2%, 0%, 7.8%)
CIE-LAB	lab(51.61, 31.94, -64.68)
CIE-LCH	lch(51.61, 72.14, 296.28°)
OKLab	oklab(59.53% 0.0176 -0.1853)
OKLCH	oklch(59.53% 0.186 275.4)
XYZ	xyz(25.7121, 19.8008, 81.0482)
Luminance	0.1980 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636EEB #EBE063

analogous

#63B2EB #636EEB #9C63EB

triadic

#636EEB #EB636E #6EEB63

tetradic

#636EEB #EB63B2 #EBE063 #63EB9C

square

#636EEB #EB63B2 #EBE063 #63EB9C

split-complementary

#636EEB #EB9C63 #B2EB63

monochromatic

#1825BC #2D3CE4 #636EEB #99A0F2 #CFD3F9

Accessibility & contrast

On white

4.23

#636EEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.96

#636EEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636EEB

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636EEB	#FFFFFF	#000000	##000000
##636EEB	1.00	4.23	4.96	4.96
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.96	21.00	1.00	1.00
##000000	4.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E81EF

Deuteranopia (green-blind)

#0075E8

Tritanopia (blue-blind)

#008BA2

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #636eeb;
/* rgb */ color: rgb(99, 110, 235);
/* oklch */ color: oklch(59.5% 0.186 275.4);

Tailwind

colors: {
  custom: {
    50: '#9a97f2',
    500: '#636eeb',
    950: '#000000',
  },
}

SCSS

$custom: #636eeb;
$custom-light: #9a97f2;
$custom-dark: #000000;

JSON

{
  "hex": "#636eeb",
  "rgb": {
    "r": 99,
    "g": 110,
    "b": 235
  },
  "hsl": {
    "h": 235.147,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.59534,
    "c": 0.18618,
    "h": 275.4
  },
  "luminance": 0.19803
}

Semantic roles & 50–950 ramp

primary

#636EEB

secondary

#ECE8BE

accent

#C90CDA

background

#FAF9FE

surface

#F4F2FD

border

#CECCD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636EEB

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

Preview Lab → · Contrast checker → · Palette generator →