#636FEB#636FEB

#636FEB is a mid, vivid blue. Relative luminance 0.200; OKLCH L 59.7% C 0.185 H 275.2°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#636FEB
RGB	rgb(99, 111, 235)
HSL	hsl(235, 77%, 65%)
HSV	hsv(235, 58%, 92%)
CMYK	cmyk(57.9%, 52.8%, 0%, 7.8%)
CIE-LAB	lab(51.86, 31.34, -64.29)
CIE-LCH	lch(51.86, 71.52, 295.99°)
OKLab	oklab(59.72% 0.0166 -0.1842)
OKLCH	oklch(59.72% 0.185 275.2)
XYZ	xyz(25.8206, 20.0178, 81.0843)
Luminance	0.2002 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FEB #EBDF63

analogous

#63B3EB #636FEB #9B63EB

triadic

#636FEB #EB636F #6FEB63

tetradic

#636FEB #EB63B3 #EBDF63 #63EB9B

square

#636FEB #EB63B3 #EBDF63 #63EB9B

split-complementary

#636FEB #EB9B63 #B3EB63

monochromatic

#1826BC #2D3DE4 #636FEB #99A1F2 #CFD3F9

Accessibility & contrast

On white

4.20

#636FEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#636FEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FEB

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FEB	#FFFFFF	#000000	##000000
##636FEB	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2282EF

Deuteranopia (green-blind)

#0076E8

Tritanopia (blue-blind)

#008CA2

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #636feb;
/* rgb */ color: rgb(99, 111, 235);
/* oklch */ color: oklch(59.7% 0.185 275.2);

Tailwind

colors: {
  custom: {
    50: '#9a98f2',
    500: '#636feb',
    950: '#000000',
  },
}

SCSS

$custom: #636feb;
$custom-light: #9a98f2;
$custom-dark: #000000;

JSON

{
  "hex": "#636feb",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 235
  },
  "hsl": {
    "h": 234.706,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.59719,
    "c": 0.18492,
    "h": 275.2
  },
  "luminance": 0.2002
}

Semantic roles & 50–950 ramp

primary

#636FEB

secondary

#ECE8BE

accent

#C70CDA

background

#FAF9FE

surface

#F4F2FD

border

#CECCD5

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636FEB

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

Preview Lab → · Contrast checker → · Palette generator →