#636CCF#636CCF

#636CCF is a mid, vivid blue. Relative luminance 0.179; OKLCH L 57.3% C 0.151 H 276.6°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#636CCF
RGB	rgb(99, 108, 207)
HSL	hsl(235, 53%, 60%)
HSV	hsv(235, 52%, 81%)
CMYK	cmyk(52.2%, 47.8%, 0%, 18.8%)
CIE-LAB	lab(49.35, 24.22, -52.49)
CIE-LCH	lch(49.35, 57.81, 294.77°)
OKLab	oklab(57.27% 0.0174 -0.1495)
OKLCH	oklch(57.27% 0.151 276.6)
XYZ	xyz(21.7671, 17.8814, 61.3238)
Luminance	0.1788 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636CCF #CFC663

analogous

#63A2CF #636CCF #9063CF

triadic

#636CCF #CF636C #6CCF63

tetradic

#636CCF #CF63A2 #CFC663 #63CF90

square

#636CCF #CF63A2 #CFC663 #63CF90

split-complementary

#636CCF #CF9063 #A2CF63

monochromatic

#2B338C #3A44BB #636CCF #9298DD #C1C4EC

Accessibility & contrast

On white

4.59

#636CCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#636CCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #636CCF

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636CCF	#FFFFFF	#000000	##FFFFFF
##636CCF	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F7AD3

Deuteranopia (green-blind)

#3371CD

Tritanopia (blue-blind)

#338293

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #636ccf;
/* rgb */ color: rgb(99, 108, 207);
/* oklch */ color: oklch(57.3% 0.151 276.6);

Tailwind

colors: {
  custom: {
    50: '#9796de',
    500: '#636ccf',
    950: '#000000',
  },
}

SCSS

$custom: #636ccf;
$custom-light: #9796de;
$custom-dark: #000000;

JSON

{
  "hex": "#636ccf",
  "rgb": {
    "r": 99,
    "g": 108,
    "b": 207
  },
  "hsl": {
    "h": 235,
    "s": 52.941,
    "l": 60
  },
  "oklch": {
    "l": 0.5727,
    "c": 0.15052,
    "h": 276.6
  },
  "luminance": 0.17883
}

Semantic roles & 50–950 ramp

primary

#636CCF

secondary

#DCD8B2

accent

#D04BDC

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636CCF

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

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