#636BF2#636BF2

#636BF2 is a mid, vivid blue. Relative luminance 0.196; OKLCH L 59.5% C 0.199 H 276.0°. Best body text is #000000 at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#636BF2
RGB	rgb(99, 107, 242)
HSL	hsl(237, 85%, 67%)
HSV	hsv(237, 59%, 95%)
CMYK	cmyk(59.1%, 55.8%, 0%, 5.1%)
CIE-LAB	lab(51.36, 36.01, -69.01)
CIE-LCH	lch(51.36, 77.84, 297.56°)
OKLab	oklab(59.49% 0.0207 -0.1981)
OKLCH	oklch(59.49% 0.199 276)
XYZ	xyz(26.4251, 19.5768, 86.3734)
Luminance	0.1958 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636BF2 #F2EA63

analogous

#63B3F2 #636BF2 #A263F2

triadic

#636BF2 #F2636B #6BF263

tetradic

#636BF2 #F263B3 #F2EA63 #63F2A2

square

#636BF2 #F263B3 #F2EA63 #63F2A2

split-complementary

#636BF2 #F2A263 #B3F263

monochromatic

#111BCA #2B35ED #636BF2 #9BA1F7 #D4D6FB

Accessibility & contrast

On white

4.27

#636BF2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.92

#636BF2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636BF2

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636BF2	#FFFFFF	#000000	##000000
##636BF2	1.00	4.27	4.92	4.92
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.92	21.00	1.00	1.00
##000000	4.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0081F7

Deuteranopia (green-blind)

#0074EF

Tritanopia (blue-blind)

#008BA4

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #636bf2;
/* rgb */ color: rgb(99, 107, 242);
/* oklch */ color: oklch(59.5% 0.199 276.0);

Tailwind

colors: {
  custom: {
    50: '#9c95f7',
    500: '#636bf2',
    950: '#000000',
  },
}

SCSS

$custom: #636bf2;
$custom-light: #9c95f7;
$custom-dark: #000000;

JSON

{
  "hex": "#636bf2",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 242
  },
  "hsl": {
    "h": 236.643,
    "s": 84.615,
    "l": 66.863
  },
  "oklch": {
    "l": 0.59493,
    "c": 0.19919,
    "h": 276
  },
  "luminance": 0.19579
}

Semantic roles & 50–950 ramp

primary

#636BF2

secondary

#EFEDC2

accent

#D504E1

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636BF2

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

Preview Lab → · Contrast checker → · Palette generator →