#636FEE#636FEE

#636FEE is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.9% C 0.189 H 275.1°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#636FEE
RGB	rgb(99, 111, 238)
HSL	hsl(235, 80%, 66%)
HSV	hsv(235, 58%, 93%)
CMYK	cmyk(58.4%, 53.4%, 0%, 6.7%)
CIE-LAB	lab(52.05, 32.31, -65.65)
CIE-LCH	lch(52.05, 73.17, 296.20°)
OKLab	oklab(59.93% 0.0168 -0.1882)
OKLCH	oklch(59.93% 0.189 275.1)
XYZ	xyz(26.2576, 20.1926, 83.3862)
Luminance	0.2019 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FEE #EEE263

analogous

#63B4EE #636FEE #9C63EE

triadic

#636FEE #EE636F #6FEE63

tetradic

#636FEE #EE63B4 #EEE263 #63EE9C

square

#636FEE #EE63B4 #EEE263 #63EE9C

split-complementary

#636FEE #EE9C63 #B4EE63

monochromatic

#1524C2 #2C3CE8 #636FEE #9AA2F4 #D1D5FA

Accessibility & contrast

On white

4.17

#636FEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#636FEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FEE

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FEE	#FFFFFF	#000000	##000000
##636FEE	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B82F2

Deuteranopia (green-blind)

#0076EB

Tritanopia (blue-blind)

#008DA4

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #636fee;
/* rgb */ color: rgb(99, 111, 238);
/* oklch */ color: oklch(59.9% 0.189 275.1);

Tailwind

colors: {
  custom: {
    50: '#9b98f4',
    500: '#636fee',
    950: '#000000',
  },
}

SCSS

$custom: #636fee;
$custom-light: #9b98f4;
$custom-dark: #000000;

JSON

{
  "hex": "#636fee",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 238
  },
  "hsl": {
    "h": 234.82,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.59929,
    "c": 0.18891,
    "h": 275.1
  },
  "luminance": 0.20195
}

Semantic roles & 50–950 ramp

primary

#636FEE

secondary

#EDE9C0

accent

#CA09DD

background

#FAF9FF

surface

#F4F2FE

border

#CECCD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636FEE

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

Preview Lab → · Contrast checker → · Palette generator →