#636BFF#636BFF

#636BFF is a mid, highly saturated blue. Relative luminance 0.204; OKLCH L 60.5% C 0.216 H 275.5°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#636BFF
RGB	rgb(99, 107, 255)
HSL	hsl(237, 100%, 69%)
HSV	hsv(237, 61%, 100%)
CMYK	cmyk(61.2%, 58%, 0%, 0%)
CIE-LAB	lab(52.27, 40.19, -74.75)
CIE-LCH	lch(52.27, 84.87, 298.26°)
OKLab	oklab(60.46% 0.0207 -0.215)
OKLCH	oklch(60.46% 0.216 275.5)
XYZ	xyz(28.4474, 20.3857, 97.0241)
Luminance	0.2039 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636BFF #FFF763

analogous

#63B9FF #636BFF #A963FF

triadic

#636BFF #FF636B #6BFF63

tetradic

#636BFF #FF63B9 #FFF763 #63FFA9

square

#636BFF #FF63B9 #FFF763 #63FFA9

split-complementary

#636BFF #FFA963 #B9FF63

monochromatic

#000CE8 #2631FF #636BFF #A0A5FF #DDDFFF

Accessibility & contrast

On white

4.14

#636BFF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#636BFF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636BFF

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636BFF	#FFFFFF	#000000	##000000
##636BFF	1.00	4.14	5.08	5.08
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0084FF

Deuteranopia (green-blind)

#0076FC

Tritanopia (blue-blind)

#008FAB

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #636bff;
/* rgb */ color: rgb(99, 107, 255);
/* oklch */ color: oklch(60.5% 0.216 275.5);

Tailwind

colors: {
  custom: {
    50: '#9e95ff',
    500: '#636bff',
    950: '#000000',
  },
}

SCSS

$custom: #636bff;
$custom-light: #9e95ff;
$custom-dark: #000000;

JSON

{
  "hex": "#636bff",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 255
  },
  "hsl": {
    "h": 236.923,
    "s": 100,
    "l": 69.412
  },
  "oklch": {
    "l": 0.60461,
    "c": 0.21598,
    "h": 275.5
  },
  "luminance": 0.20388
}

Semantic roles & 50–950 ramp

primary

#636BFF

secondary

#F5F3C8

accent

#DA00E6

background

#FAF9FF

surface

#F4F1FF

border

#CECBD7

text

#100D18

muted

#7F7E86

Preview Lab

Preview with #636BFF

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

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