#636AEB#636AEB

#636AEB is a mid, vivid blue. Relative luminance 0.190; OKLCH L 58.8% C 0.191 H 276.4°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#636AEB
RGB	rgb(99, 106, 235)
HSL	hsl(237, 77%, 65%)
HSV	hsv(237, 58%, 92%)
CMYK	cmyk(57.9%, 54.9%, 0%, 7.8%)
CIE-LAB	lab(50.64, 34.37, -66.26)
CIE-LCH	lch(50.64, 74.64, 297.41°)
OKLab	oklab(58.81% 0.0215 -0.19)
OKLCH	oklch(58.81% 0.191 276.4)
XYZ	xyz(25.2902, 18.9570, 80.9075)
Luminance	0.1896 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636AEB #EBE463

analogous

#63AEEB #636AEB #A063EB

triadic

#636AEB #EB636A #6AEB63

tetradic

#636AEB #EB63AE #EBE463 #63EBA0

square

#636AEB #EB63AE #EBE463 #63EBA0

split-complementary

#636AEB #EBA063 #AEEB63

monochromatic

#1820BC #2D36E4 #636AEB #999EF2 #CFD2F9

Accessibility & contrast

On white

4.38

#636AEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#636AEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636AEB

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636AEB	#FFFFFF	#000000	##000000
##636AEB	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#027EEF

Deuteranopia (green-blind)

#0073E8

Tritanopia (blue-blind)

#0088A0

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #636aeb;
/* rgb */ color: rgb(99, 106, 235);
/* oklch */ color: oklch(58.8% 0.191 276.4);

Tailwind

colors: {
  custom: {
    50: '#9b94f2',
    500: '#636aeb',
    950: '#000000',
  },
}

SCSS

$custom: #636aeb;
$custom-light: #9b94f2;
$custom-dark: #000000;

JSON

{
  "hex": "#636aeb",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 235
  },
  "hsl": {
    "h": 236.912,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.58806,
    "c": 0.19123,
    "h": 276.4
  },
  "luminance": 0.18959
}

Semantic roles & 50–950 ramp

primary

#636AEB

secondary

#ECE9BE

accent

#CF0CDA

background

#FAF9FE

surface

#F4F1FD

border

#CECBD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636AEB

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

Preview Lab → · Contrast checker → · Palette generator →