#636EC9#636EC9

#636EC9 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.3% C 0.139 H 275.9°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#636EC9
RGB	rgb(99, 110, 201)
HSL	hsl(234, 49%, 59%)
HSV	hsv(234, 51%, 79%)
CMYK	cmyk(50.7%, 45.3%, 0%, 21.2%)
CIE-LAB	lab(49.52, 21.10, -48.79)
CIE-LCH	lch(49.52, 53.16, 293.39°)
OKLab	oklab(57.29% 0.0143 -0.1386)
OKLCH	oklch(57.29% 0.139 275.9)
XYZ	xyz(21.2608, 18.0203, 57.6050)
Luminance	0.1802 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636EC9 #C9BE63

analogous

#63A1C9 #636EC9 #8B63C9

triadic

#636EC9 #C9636E #6EC963

tetradic

#636EC9 #C963A1 #C9BE63 #63C98B

square

#636EC9 #C963A1 #C9BE63 #63C98B

split-complementary

#636EC9 #C98B63 #A1C963

monochromatic

#2E3784 #3D4AB1 #636EC9 #9098D9 #BEC3E8

Accessibility & contrast

On white

4.56

#636EC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#636EC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #636EC9

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636EC9	#FFFFFF	#000000	##000000
##636EC9	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#477ACC

Deuteranopia (green-blind)

#3D72C7

Tritanopia (blue-blind)

#398292

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #636ec9;
/* rgb */ color: rgb(99, 110, 201);
/* oklch */ color: oklch(57.3% 0.139 275.9);

Tailwind

colors: {
  custom: {
    50: '#9697da',
    500: '#636ec9',
    950: '#000000',
  },
}

SCSS

$custom: #636ec9;
$custom-light: #9697da;
$custom-dark: #000000;

JSON

{
  "hex": "#636ec9",
  "rgb": {
    "r": 99,
    "g": 110,
    "b": 201
  },
  "hsl": {
    "h": 233.529,
    "s": 48.571,
    "l": 58.824
  },
  "oklch": {
    "l": 0.57285,
    "c": 0.13937,
    "h": 275.9
  },
  "luminance": 0.18022
}

Semantic roles & 50–950 ramp

primary

#636EC9

secondary

#D8D4B0

accent

#C950D8

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636EC9

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

Preview Lab → · Contrast checker → · Palette generator →