#636FBD#636FBD

#636FBD is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.8% C 0.121 H 275.3°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#636FBD
RGB	rgb(99, 111, 189)
HSL	hsl(232, 41%, 56%)
HSV	hsv(232, 48%, 74%)
CMYK	cmyk(47.6%, 41.3%, 0%, 25.9%)
CIE-LAB	lab(49.12, 16.75, -42.53)
CIE-LCH	lch(49.12, 45.71, 291.50°)
OKLab	oklab(56.77% 0.0111 -0.1203)
OKLCH	oklch(56.77% 0.121 275.3)
XYZ	xyz(20.0125, 17.6945, 50.4951)
Luminance	0.1770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FBD #BDB163

analogous

#639CBD #636FBD #8463BD

triadic

#636FBD #BD636F #6FBD63

tetradic

#636FBD #BD639C #BDB163 #63BD84

square

#636FBD #BD639C #BDB163 #63BD84

split-complementary

#636FBD #BD8463 #9CBD63

monochromatic

#313A74 #43509F #636FBD #8E97CF #B9BEE1

Accessibility & contrast

On white

4.63

#636FBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#636FBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #636FBD

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

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

Color blindness preview

Protanopia (red-blind)

#5179C0

Deuteranopia (green-blind)

#4971BB

Tritanopia (blue-blind)

#417F8D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #636fbd;
/* rgb */ color: rgb(99, 111, 189);
/* oklch */ color: oklch(56.8% 0.121 275.3);

Tailwind

colors: {
  custom: {
    50: '#9498d1',
    500: '#636fbd',
    950: '#000000',
  },
}

SCSS

$custom: #636fbd;
$custom-light: #9498d1;
$custom-dark: #000000;

JSON

{
  "hex": "#636fbd",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 189
  },
  "hsl": {
    "h": 232,
    "s": 40.541,
    "l": 56.471
  },
  "oklch": {
    "l": 0.56767,
    "c": 0.12079,
    "h": 275.3
  },
  "luminance": 0.17696
}

Semantic roles & 50–950 ramp

primary

#636FBD

secondary

#D0CBAB

accent

#C057D0

background

#F9F9FC

surface

#F2F2F9

border

#CCCCD2

text

#0E0D14

muted

#7E7E82

Preview Lab

Preview with #636FBD

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

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