#636AEF#636AEF

#636AEF is a mid, vivid blue. Relative luminance 0.192; OKLCH L 59.1% C 0.197 H 276.3°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#636AEF
RGB	rgb(99, 106, 239)
HSL	hsl(237, 81%, 66%)
HSV	hsv(237, 59%, 94%)
CMYK	cmyk(58.6%, 55.6%, 0%, 6.3%)
CIE-LAB	lab(50.91, 35.65, -68.06)
CIE-LCH	lch(50.91, 76.83, 297.65°)
OKLab	oklab(59.1% 0.0216 -0.1953)
OKLCH	oklch(59.1% 0.197 276.3)
XYZ	xyz(25.8746, 19.1908, 83.9853)
Luminance	0.1919 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636AEF #EFE863

analogous

#63B0EF #636AEF #A263EF

triadic

#636AEF #EF636A #6AEF63

tetradic

#636AEF #EF63B0 #EFE863 #63EFA2

square

#636AEF #EF63B0 #EFE863 #63EFA2

split-complementary

#636AEF #EFA263 #B0EF63

monochromatic

#141DC4 #2B35E9 #636AEF #9B9FF5 #D2D4FA

Accessibility & contrast

On white

4.34

#636AEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#636AEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636AEF

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636AEF	#FFFFFF	#000000	##000000
##636AEF	1.00	4.34	4.84	4.84
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.84	21.00	1.00	1.00
##000000	4.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#007FF4

Deuteranopia (green-blind)

#0073EC

Tritanopia (blue-blind)

#0089A2

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #636aef;
/* rgb */ color: rgb(99, 106, 239);
/* oklch */ color: oklch(59.1% 0.197 276.3);

Tailwind

colors: {
  custom: {
    50: '#9b94f5',
    500: '#636aef',
    950: '#000000',
  },
}

SCSS

$custom: #636aef;
$custom-light: #9b94f5;
$custom-dark: #000000;

JSON

{
  "hex": "#636aef",
  "rgb": {
    "r": 99,
    "g": 106,
    "b": 239
  },
  "hsl": {
    "h": 237,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.59096,
    "c": 0.1965,
    "h": 276.3
  },
  "luminance": 0.19193
}

Semantic roles & 50–950 ramp

primary

#636AEF

secondary

#EEEBC0

accent

#D308DE

background

#FAF9FF

surface

#F4F1FE

border

#CECBD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636AEF

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

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