#636EF3#636EF3

#636EF3 is a mid, vivid blue. Relative luminance 0.203; OKLCH L 60.1% C 0.197 H 275.2°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#636EF3
RGB	rgb(99, 110, 243)
HSL	hsl(235, 86%, 67%)
HSV	hsv(235, 59%, 95%)
CMYK	cmyk(59.3%, 54.7%, 0%, 4.7%)
CIE-LAB	lab(52.15, 34.52, -68.29)
CIE-LCH	lch(52.15, 76.52, 296.82°)
OKLab	oklab(60.1% 0.0179 -0.196)
OKLCH	oklch(60.1% 0.197 275.2)
XYZ	xyz(26.8939, 20.2735, 87.2726)
Luminance	0.2028 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636EF3 #F3E863

analogous

#63B6F3 #636EF3 #A063F3

triadic

#636EF3 #F3636E #6EF363

tetradic

#636EF3 #F363B6 #F3E863 #63F3A0

square

#636EF3 #F363B6 #F3E863 #63F3A0

split-complementary

#636EF3 #F3A063 #B6F363

monochromatic

#101ECC #2A39EF #636EF3 #9CA3F7 #D5D8FC

Accessibility & contrast

On white

4.15

#636EF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#636EF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636EF3

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636EF3	#FFFFFF	#000000	##000000
##636EF3	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0083F8

Deuteranopia (green-blind)

#0076F0

Tritanopia (blue-blind)

#008DA6

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #636ef3;
/* rgb */ color: rgb(99, 110, 243);
/* oklch */ color: oklch(60.1% 0.197 275.2);

Tailwind

colors: {
  custom: {
    50: '#9c97f8',
    500: '#636ef3',
    950: '#000000',
  },
}

SCSS

$custom: #636ef3;
$custom-light: #9c97f8;
$custom-dark: #000000;

JSON

{
  "hex": "#636ef3",
  "rgb": {
    "r": 99,
    "g": 110,
    "b": 243
  },
  "hsl": {
    "h": 235.417,
    "s": 85.714,
    "l": 67.059
  },
  "oklch": {
    "l": 0.60103,
    "c": 0.19678,
    "h": 275.2
  },
  "luminance": 0.20276
}

Semantic roles & 50–950 ramp

primary

#636EF3

secondary

#F0ECC2

accent

#D103E2

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636EF3

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

Preview Lab → · Contrast checker → · Palette generator →