#636EF8#636EF8

#636EF8 is a mid, highly saturated blue. Relative luminance 0.206; OKLCH L 60.5% C 0.203 H 275.1°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#636EF8
RGB	rgb(99, 110, 248)
HSL	hsl(236, 91%, 68%)
HSV	hsv(236, 60%, 97%)
CMYK	cmyk(60.1%, 55.6%, 0%, 2.7%)
CIE-LAB	lab(52.49, 36.14, -70.52)
CIE-LCH	lch(52.49, 79.24, 297.13°)
OKLab	oklab(60.47% 0.018 -0.2025)
OKLCH	oklch(60.47% 0.203 275.1)
XYZ	xyz(27.6593, 20.5796, 91.3034)
Luminance	0.2058 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636EF8 #F8ED63

analogous

#63B9F8 #636EF8 #A263F8

triadic

#636EF8 #F8636E #6EF863

tetradic

#636EF8 #F863B9 #F8ED63 #63F8A2

square

#636EF8 #F863B9 #F8ED63 #63F8A2

split-complementary

#636EF8 #F8A263 #B9F863

monochromatic

#0A19D7 #2838F5 #636EF8 #9EA4FB #D8DBFD

Accessibility & contrast

On white

4.10

#636EF8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#636EF8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636EF8

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636EF8	#FFFFFF	#000000	##000000
##636EF8	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0084FD

Deuteranopia (green-blind)

#0077F5

Tritanopia (blue-blind)

#008FA8

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #636ef8;
/* rgb */ color: rgb(99, 110, 248);
/* oklch */ color: oklch(60.5% 0.203 275.1);

Tailwind

colors: {
  custom: {
    50: '#9c97fb',
    500: '#636ef8',
    950: '#000000',
  },
}

SCSS

$custom: #636ef8;
$custom-light: #9c97fb;
$custom-dark: #000000;

JSON

{
  "hex": "#636ef8",
  "rgb": {
    "r": 99,
    "g": 110,
    "b": 248
  },
  "hsl": {
    "h": 235.57,
    "s": 91.411,
    "l": 68.039
  },
  "oklch": {
    "l": 0.60466,
    "c": 0.20331,
    "h": 275.1
  },
  "luminance": 0.20582
}

Semantic roles & 50–950 ramp

primary

#636EF8

secondary

#F2EFC5

accent

#D500E6

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D18

muted

#7F7E86

Preview Lab

Preview with #636EF8

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

Preview Lab → · Contrast checker → · Palette generator →