#636FC7#636FC7

#636FC7 is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.4% C 0.135 H 275.4°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#636FC7
RGB	rgb(99, 111, 199)
HSL	hsl(233, 47%, 58%)
HSV	hsv(233, 50%, 78%)
CMYK	cmyk(50.3%, 44.2%, 0%, 22%)
CIE-LAB	lab(49.67, 19.86, -47.41)
CIE-LCH	lch(49.67, 51.40, 292.73°)
OKLab	oklab(57.36% 0.0128 -0.1346)
OKLCH	oklch(57.36% 0.135 275.4)
XYZ	xyz(21.1356, 18.1438, 56.4101)
Luminance	0.1815 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FC7 #C7BB63

analogous

#63A1C7 #636FC7 #8963C7

triadic

#636FC7 #C7636F #6FC763

tetradic

#636FC7 #C763A1 #C7BB63 #63C789

square

#636FC7 #C763A1 #C7BB63 #63C789

split-complementary

#636FC7 #C78963 #A1C763

monochromatic

#2E3881 #3F4CAE #636FC7 #9099D7 #BDC2E7

Accessibility & contrast

On white

4.54

#636FC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#636FC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FC7

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FC7	#FFFFFF	#000000	##000000
##636FC7	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A7ACA

Deuteranopia (green-blind)

#4172C5

Tritanopia (blue-blind)

#3A8291

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #636fc7;
/* rgb */ color: rgb(99, 111, 199);
/* oklch */ color: oklch(57.4% 0.135 275.4);

Tailwind

colors: {
  custom: {
    50: '#9598d8',
    500: '#636fc7',
    950: '#000000',
  },
}

SCSS

$custom: #636fc7;
$custom-light: #9598d8;
$custom-dark: #000000;

JSON

{
  "hex": "#636fc7",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 199
  },
  "hsl": {
    "h": 232.8,
    "s": 47.17,
    "l": 58.431
  },
  "oklch": {
    "l": 0.57362,
    "c": 0.13517,
    "h": 275.4
  },
  "luminance": 0.18145
}

Semantic roles & 50–950 ramp

primary

#636FC7

secondary

#D7D2AF

accent

#C751D7

background

#F9F9FD

surface

#F2F2FA

border

#CCCCD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #636FC7

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

Preview Lab → · Contrast checker → · Palette generator →