#636CC7#636CC7

#636CC7 is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.8% C 0.139 H 276.7°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#636CC7
RGB	rgb(99, 108, 199)
HSL	hsl(235, 47%, 58%)
HSV	hsv(235, 50%, 78%)
CMYK	cmyk(50.3%, 45.7%, 0%, 22%)
CIE-LAB	lab(48.88, 21.70, -48.66)
CIE-LCH	lch(48.88, 53.28, 294.04°)
OKLab	oklab(56.76% 0.0164 -0.1383)
OKLCH	oklch(56.76% 0.139 276.7)
XYZ	xyz(20.8137, 17.5001, 56.3029)
Luminance	0.1750 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CC7 #C7BE63

analogous

#639EC7 #636CC7 #8C63C7

triadic

#636CC7 #C7636C #6CC763

tetradic

#636CC7 #C7639E #C7BE63 #63C78C

square

#636CC7 #C7639E #C7BE63 #63C78C

split-complementary

#636CC7 #C78C63 #9EC763

monochromatic

#2E3681 #3F49AE #636CC7 #9096D7 #BDC1E7

Accessibility & contrast

On white

4.67

#636CC7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#636CC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #636CC7

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CC7	#FFFFFF	#000000	##FFFFFF
##636CC7	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4578CA

Deuteranopia (green-blind)

#3C70C5

Tritanopia (blue-blind)

#3B8090

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #636cc7;
/* rgb */ color: rgb(99, 108, 199);
/* oklch */ color: oklch(56.8% 0.139 276.7);

Tailwind

colors: {
  custom: {
    50: '#9696d8',
    500: '#636cc7',
    950: '#000000',
  },
}

SCSS

$custom: #636cc7;
$custom-light: #9696d8;
$custom-dark: #000000;

JSON

{
  "hex": "#636cc7",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 199
  },
  "hsl": {
    "h": 234.6,
    "s": 47.17,
    "l": 58.431
  },
  "oklch": {
    "l": 0.56764,
    "c": 0.13922,
    "h": 276.7
  },
  "luminance": 0.17501
}

Semantic roles & 50–950 ramp

primary

#636CC7

secondary

#D7D3AF

accent

#CB51D7

background

#F9F9FD

surface

#F2F1FA

border

#CCCBD3

text

#0E0D14

muted

#7E7E83

Preview Lab

Preview with #636CC7

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

Preview Lab → · Contrast checker → · Palette generator →