#636CD8#636CD8

#636CD8 is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.9% C 0.163 H 276.4°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#636CD8
RGB	rgb(99, 108, 216)
HSL	hsl(235, 60%, 62%)
HSV	hsv(235, 54%, 85%)
CMYK	cmyk(54.2%, 50%, 0%, 15.3%)
CIE-LAB	lab(49.90, 27.07, -56.73)
CIE-LCH	lch(49.90, 62.86, 295.51°)
OKLab	oklab(57.86% 0.0183 -0.162)
OKLCH	oklch(57.86% 0.163 276.4)
XYZ	xyz(22.8989, 18.3341, 67.2846)
Luminance	0.1834 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CD8 #D8CF63

analogous

#63A6D8 #636CD8 #9563D8

triadic

#636CD8 #D8636C #6CD863

tetradic

#636CD8 #D863A6 #D8CF63 #63D895

square

#636CD8 #D863A6 #D8CF63 #63D895

split-complementary

#636CD8 #D89563 #A6D863

monochromatic

#272F9A #333ECB #636CD8 #949AE4 #C5C8F0

Accessibility & contrast

On white

4.50

#636CD8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.67

#636CD8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636CD8

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CD8	#FFFFFF	#000000	##000000
##636CD8	1.00	4.50	4.67	4.67
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#357CDC

Deuteranopia (green-blind)

#2572D6

Tritanopia (blue-blind)

#298498

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #636cd8;
/* rgb */ color: rgb(99, 108, 216);
/* oklch */ color: oklch(57.9% 0.163 276.4);

Tailwind

colors: {
  custom: {
    50: '#9896e5',
    500: '#636cd8',
    950: '#000000',
  },
}

SCSS

$custom: #636cd8;
$custom-light: #9896e5;
$custom-dark: #000000;

JSON

{
  "hex": "#636cd8",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 216
  },
  "hsl": {
    "h": 235.385,
    "s": 60,
    "l": 61.765
  },
  "oklch": {
    "l": 0.57859,
    "c": 0.16301,
    "h": 276.4
  },
  "luminance": 0.18336
}

Semantic roles & 50–950 ramp

primary

#636CD8

secondary

#E1DEB6

accent

#BB1EC8

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #636CD8

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

Preview Lab → · Contrast checker → · Palette generator →