#636EEC#636EEC

#636EEC is a mid, vivid blue. Relative luminance 0.199; OKLCH L 59.6% C 0.188 H 275.4°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#636EEC
RGB	rgb(99, 110, 236)
HSL	hsl(235, 78%, 66%)
HSV	hsv(235, 58%, 93%)
CMYK	cmyk(58.1%, 53.4%, 0%, 7.5%)
CIE-LAB	lab(51.68, 32.27, -65.14)
CIE-LCH	lch(51.68, 72.69, 296.35°)
OKLab	oklab(59.61% 0.0176 -0.1867)
OKLCH	oklch(59.61% 0.188 275.4)
XYZ	xyz(25.8569, 19.8587, 81.8112)
Luminance	0.1986 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636EEC #ECE163

analogous

#63B3EC #636EEC #9C63EC

triadic

#636EEC #EC636E #6EEC63

tetradic

#636EEC #EC63B3 #ECE163 #63EC9C

square

#636EEC #EC63B3 #ECE163 #63EC9C

split-complementary

#636EEC #EC9C63 #B3EC63

monochromatic

#1724BE #2C3BE5 #636EEC #9AA1F3 #D0D3F9

Accessibility & contrast

On white

4.22

#636EEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#636EEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636EEC

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636EEC	#FFFFFF	#000000	##000000
##636EEC	1.00	4.22	4.97	4.97
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C81F0

Deuteranopia (green-blind)

#0076E9

Tritanopia (blue-blind)

#008BA2

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #636eec;
/* rgb */ color: rgb(99, 110, 236);
/* oklch */ color: oklch(59.6% 0.188 275.4);

Tailwind

colors: {
  custom: {
    50: '#9b97f3',
    500: '#636eec',
    950: '#000000',
  },
}

SCSS

$custom: #636eec;
$custom-light: #9b97f3;
$custom-dark: #000000;

JSON

{
  "hex": "#636eec",
  "rgb": {
    "r": 99,
    "g": 110,
    "b": 236
  },
  "hsl": {
    "h": 235.182,
    "s": 78.286,
    "l": 65.686
  },
  "oklch": {
    "l": 0.59605,
    "c": 0.18751,
    "h": 275.4
  },
  "luminance": 0.19861
}

Semantic roles & 50–950 ramp

primary

#636EEC

secondary

#ECE9BF

accent

#CA0BDB

background

#FAF9FE

surface

#F4F2FD

border

#CECCD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636EEC

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

Preview Lab → · Contrast checker → · Palette generator →