#636FF1#636FF1

#636FF1 is a mid, vivid blue. Relative luminance 0.204; OKLCH L 60.1% C 0.193 H 275.0°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#636FF1
RGB	rgb(99, 111, 241)
HSL	hsl(235, 84%, 67%)
HSV	hsv(235, 59%, 95%)
CMYK	cmyk(58.9%, 53.9%, 0%, 5.5%)
CIE-LAB	lab(52.25, 33.27, -67.00)
CIE-LCH	lch(52.25, 74.81, 296.41°)
OKLab	oklab(60.14% 0.0169 -0.1921)
OKLCH	oklch(60.14% 0.193 275)
XYZ	xyz(26.7020, 20.3704, 85.7268)
Luminance	0.2037 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636FF1 #F1E563

analogous

#63B6F1 #636FF1 #9E63F1

triadic

#636FF1 #F1636F #6FF163

tetradic

#636FF1 #F163B6 #F1E563 #63F19E

square

#636FF1 #F163B6 #F1E563 #63F19E

split-complementary

#636FF1 #F19E63 #B6F163

monochromatic

#1221C8 #2B3BEC #636FF1 #9BA3F6 #D3D7FB

Accessibility & contrast

On white

4.14

#636FF1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#636FF1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636FF1

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636FF1	#FFFFFF	#000000	##000000
##636FF1	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#1283F5

Deuteranopia (green-blind)

#0077EE

Tritanopia (blue-blind)

#008DA5

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #636ff1;
/* rgb */ color: rgb(99, 111, 241);
/* oklch */ color: oklch(60.1% 0.193 275.0);

Tailwind

colors: {
  custom: {
    50: '#9b98f6',
    500: '#636ff1',
    950: '#000000',
  },
}

SCSS

$custom: #636ff1;
$custom-light: #9b98f6;
$custom-dark: #000000;

JSON

{
  "hex": "#636ff1",
  "rgb": {
    "r": 99,
    "g": 111,
    "b": 241
  },
  "hsl": {
    "h": 234.93,
    "s": 83.529,
    "l": 66.667
  },
  "oklch": {
    "l": 0.60142,
    "c": 0.19289,
    "h": 275
  },
  "luminance": 0.20372
}

Semantic roles & 50–950 ramp

primary

#636FF1

secondary

#EFEBC1

accent

#CE06E0

background

#FAF9FF

surface

#F4F2FF

border

#CECCD7

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636FF1

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

Preview Lab → · Contrast checker → · Palette generator →