#636BEE#636BEE

#636BEE is a mid, vivid blue. Relative luminance 0.193; OKLCH L 59.2% C 0.194 H 276.1°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#636BEE
RGB	rgb(99, 107, 238)
HSL	hsl(237, 80%, 66%)
HSV	hsv(237, 58%, 93%)
CMYK	cmyk(58.4%, 55%, 0%, 6.7%)
CIE-LAB	lab(51.08, 34.72, -67.22)
CIE-LCH	lch(51.08, 75.66, 297.32°)
OKLab	oklab(59.2% 0.0206 -0.1928)
OKLCH	oklch(59.2% 0.194 276.1)
XYZ	xyz(25.8309, 19.3392, 83.2440)
Luminance	0.1934 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636BEE #EEE663

analogous

#63B0EE #636BEE #A063EE

triadic

#636BEE #EE636B #6BEE63

tetradic

#636BEE #EE63B0 #EEE663 #63EEA0

square

#636BEE #EE63B0 #EEE663 #63EEA0

split-complementary

#636BEE #EEA063 #B0EE63

monochromatic

#151FC2 #2C37E8 #636BEE #9A9FF4 #D1D4FA

Accessibility & contrast

On white

4.31

#636BEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#636BEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636BEE

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636BEE	#FFFFFF	#000000	##000000
##636BEE	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#0080F2

Deuteranopia (green-blind)

#0074EB

Tritanopia (blue-blind)

#008AA2

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #636bee;
/* rgb */ color: rgb(99, 107, 238);
/* oklch */ color: oklch(59.2% 0.194 276.1);

Tailwind

colors: {
  custom: {
    50: '#9b95f4',
    500: '#636bee',
    950: '#000000',
  },
}

SCSS

$custom: #636bee;
$custom-light: #9b95f4;
$custom-dark: #000000;

JSON

{
  "hex": "#636bee",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 238
  },
  "hsl": {
    "h": 236.547,
    "s": 80.347,
    "l": 66.078
  },
  "oklch": {
    "l": 0.59202,
    "c": 0.19394,
    "h": 276.1
  },
  "luminance": 0.19341
}

Semantic roles & 50–950 ramp

primary

#636BEE

secondary

#EDEBC0

accent

#D009DD

background

#FAF9FF

surface

#F4F1FE

border

#CECBD6

text

#0F0D17

muted

#7F7E85

Preview Lab

Preview with #636BEE

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

Preview Lab → · Contrast checker → · Palette generator →