#636BF7#636BF7

#636BF7 is a mid, highly saturated blue. Relative luminance 0.199; OKLCH L 59.9% C 0.206 H 275.8°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#636BF7
RGB	rgb(99, 107, 247)
HSL	hsl(237, 90%, 68%)
HSV	hsv(237, 60%, 97%)
CMYK	cmyk(59.9%, 56.7%, 0%, 3.1%)
CIE-LAB	lab(51.70, 37.62, -71.23)
CIE-LCH	lch(51.70, 80.56, 297.84°)
OKLab	oklab(59.86% 0.0207 -0.2046)
OKLCH	oklch(59.86% 0.206 275.8)
XYZ	xyz(27.1863, 19.8813, 90.3825)
Luminance	0.1988 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636BF7 #F7EF63

analogous

#63B5F7 #636BF7 #A563F7

triadic

#636BF7 #F7636B #6BF763

tetradic

#636BF7 #F763B5 #F7EF63 #63F7A5

square

#636BF7 #F763B5 #F7EF63 #63F7A5

split-complementary

#636BF7 #F7A563 #B5F763

monochromatic

#0B16D5 #2934F4 #636BF7 #9DA2FA #D7D9FD

Accessibility & contrast

On white

4.22

#636BF7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#636BF7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636BF7

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636BF7	#FFFFFF	#000000	##000000
##636BF7	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0082FC

Deuteranopia (green-blind)

#0075F4

Tritanopia (blue-blind)

#008DA7

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #636bf7;
/* rgb */ color: rgb(99, 107, 247);
/* oklch */ color: oklch(59.9% 0.206 275.8);

Tailwind

colors: {
  custom: {
    50: '#9c95fb',
    500: '#636bf7',
    950: '#000000',
  },
}

SCSS

$custom: #636bf7;
$custom-light: #9c95fb;
$custom-dark: #000000;

JSON

{
  "hex": "#636bf7",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 247
  },
  "hsl": {
    "h": 236.757,
    "s": 90.244,
    "l": 67.843
  },
  "oklch": {
    "l": 0.59861,
    "c": 0.20569,
    "h": 275.8
  },
  "luminance": 0.19883
}

Semantic roles & 50–950 ramp

primary

#636BF7

secondary

#F2EFC4

accent

#D900E6

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636BF7

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

Preview Lab → · Contrast checker → · Palette generator →