#636BCF#636BCF

#636BCF is a mid, vivid blue. Relative luminance 0.177; OKLCH L 57.1% C 0.152 H 277.0°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#636BCF
RGB	rgb(99, 107, 207)
HSL	hsl(236, 53%, 60%)
HSV	hsv(236, 52%, 81%)
CMYK	cmyk(52.2%, 48.3%, 0%, 18.8%)
CIE-LAB	lab(49.10, 24.83, -52.90)
CIE-LCH	lch(49.10, 58.44, 295.15°)
OKLab	oklab(57.08% 0.0185 -0.1507)
OKLCH	oklch(57.08% 0.152 277)
XYZ	xyz(21.6622, 17.6717, 61.2889)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636BCF #CFC763

analogous

#63A1CF #636BCF #9163CF

triadic

#636BCF #CF636B #6BCF63

tetradic

#636BCF #CF63A1 #CFC763 #63CF91

square

#636BCF #CF63A1 #CFC763 #63CF91

split-complementary

#636BCF #CF9163 #A1CF63

monochromatic

#2B328C #3A43BB #636BCF #9297DD #C1C4EC

Accessibility & contrast

On white

4.63

#636BCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#636BCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #636BCF

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636BCF	#FFFFFF	#000000	##FFFFFF
##636BCF	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D79D3

Deuteranopia (green-blind)

#3070CD

Tritanopia (blue-blind)

#348193

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #636bcf;
/* rgb */ color: rgb(99, 107, 207);
/* oklch */ color: oklch(57.1% 0.152 277.0);

Tailwind

colors: {
  custom: {
    50: '#9795de',
    500: '#636bcf',
    950: '#000000',
  },
}

SCSS

$custom: #636bcf;
$custom-light: #9795de;
$custom-dark: #000000;

JSON

{
  "hex": "#636bcf",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 207
  },
  "hsl": {
    "h": 235.556,
    "s": 52.941,
    "l": 60
  },
  "oklch": {
    "l": 0.57076,
    "c": 0.15185,
    "h": 277
  },
  "luminance": 0.17673
}

Semantic roles & 50–950 ramp

primary

#636BCF

secondary

#DCD9B2

accent

#D24BDC

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636BCF

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

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