#636BB9#636BB9

#636BB9 is a mid, vivid blue. Relative luminance 0.167; OKLCH L 55.7% C 0.120 H 277.3°. Best body text is #FFFFFF at 4.85:1 contrast (WCAG AA passes).

Color values

HEX	#636BB9
RGB	rgb(99, 107, 185)
HSL	hsl(234, 38%, 56%)
HSV	hsv(234, 46%, 73%)
CMYK	cmyk(46.5%, 42.2%, 0%, 27.5%)
CIE-LAB	lab(47.84, 17.98, -42.25)
CIE-LCH	lch(47.84, 45.91, 293.06°)
OKLab	oklab(55.72% 0.0153 -0.1195)
OKLCH	oklch(55.72% 0.12 277.3)
XYZ	xyz(19.1576, 16.6698, 48.0977)
Luminance	0.1667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636BB9 #B9B163

analogous

#6396B9 #636BB9 #8663B9

triadic

#636BB9 #B9636B #6BB963

tetradic

#636BB9 #B96396 #B9B163 #63B986

square

#636BB9 #B96396 #B9B163 #63B986

split-complementary

#636BB9 #B98663 #96B963

monochromatic

#323870 #454D9A #636BB9 #8D93CC #B7BBDF

Accessibility & contrast

On white

4.85

#636BB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.33

#636BB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636BB9

4.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636BB9	#FFFFFF	#000000	##FFFFFF
##636BB9	1.00	4.85	4.33	4.85
#FFFFFF	4.85	1.00	21.00	1.00
#000000	4.33	21.00	1.00	21.00
##FFFFFF	4.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D75BC

Deuteranopia (green-blind)

#466EB7

Tritanopia (blue-blind)

#447B89

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #636bb9;
/* rgb */ color: rgb(99, 107, 185);
/* oklch */ color: oklch(55.7% 0.120 277.3);

Tailwind

colors: {
  custom: {
    50: '#9495ce',
    500: '#636bb9',
    950: '#000000',
  },
}

SCSS

$custom: #636bb9;
$custom-light: #9495ce;
$custom-dark: #000000;

JSON

{
  "hex": "#636bb9",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 185
  },
  "hsl": {
    "h": 234.419,
    "s": 38.053,
    "l": 55.686
  },
  "oklch": {
    "l": 0.55717,
    "c": 0.12046,
    "h": 277.3
  },
  "luminance": 0.16671
}

Semantic roles & 50–950 ramp

primary

#636BB9

secondary

#CECAAA

accent

#C35ACE

background

#F9F9FC

surface

#F2F1F9

border

#CCCBD2

text

#0D0D14

muted

#7E7E82

Preview Lab

Preview with #636BB9

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

Preview Lab → · Contrast checker → · Palette generator →