#636CD7#636CD7

#636CD7 is a mid, vivid blue. Relative luminance 0.183; OKLCH L 57.8% C 0.162 H 276.5°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#636CD7
RGB	rgb(99, 108, 215)
HSL	hsl(235, 59%, 62%)
HSV	hsv(235, 54%, 84%)
CMYK	cmyk(54%, 49.8%, 0%, 15.7%)
CIE-LAB	lab(49.84, 26.76, -56.27)
CIE-LCH	lch(49.84, 62.30, 295.43°)
OKLab	oklab(57.79% 0.0182 -0.1606)
OKLCH	oklch(57.79% 0.162 276.5)
XYZ	xyz(22.7700, 18.2826, 66.6058)
Luminance	0.1828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CD7 #D7CE63

analogous

#63A6D7 #636CD7 #9463D7

triadic

#636CD7 #D7636C #6CD763

tetradic

#636CD7 #D763A6 #D7CE63 #63D794

square

#636CD7 #D763A6 #D7CE63 #63D794

split-complementary

#636CD7 #D79463 #A6D763

monochromatic

#273098 #343FC9 #636CD7 #949AE3 #C4C8F0

Accessibility & contrast

On white

4.51

#636CD7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#636CD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636CD7

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CD7	#FFFFFF	#000000	##000000
##636CD7	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#377BDB

Deuteranopia (green-blind)

#2772D5

Tritanopia (blue-blind)

#2B8497

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #636cd7;
/* rgb */ color: rgb(99, 108, 215);
/* oklch */ color: oklch(57.8% 0.162 276.5);

Tailwind

colors: {
  custom: {
    50: '#9896e4',
    500: '#636cd7',
    950: '#000000',
  },
}

SCSS

$custom: #636cd7;
$custom-light: #9896e4;
$custom-dark: #000000;

JSON

{
  "hex": "#636cd7",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 215
  },
  "hsl": {
    "h": 235.345,
    "s": 59.184,
    "l": 61.569
  },
  "oklch": {
    "l": 0.57793,
    "c": 0.16163,
    "h": 276.5
  },
  "luminance": 0.18284
}

Semantic roles & 50–950 ramp

primary

#636CD7

secondary

#E0DDB5

accent

#BA1FC7

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #636CD7

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

Preview Lab → · Contrast checker → · Palette generator →