#636BB2#636BB2

#636BB2 is a mid, moderate blue. Relative luminance 0.164; OKLCH L 55.3% C 0.110 H 277.3°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#636BB2
RGB	rgb(99, 107, 178)
HSL	hsl(234, 34%, 54%)
HSV	hsv(234, 44%, 70%)
CMYK	cmyk(44.4%, 39.9%, 0%, 30.2%)
CIE-LAB	lab(47.47, 15.85, -38.77)
CIE-LCH	lch(47.47, 41.88, 292.24°)
OKLab	oklab(55.31% 0.014 -0.1093)
OKLCH	oklch(55.31% 0.11 277.3)
XYZ	xyz(18.4367, 16.3815, 44.3013)
Luminance	0.1638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636BB2 #B2AA63

analogous

#6393B2 #636BB2 #8363B2

triadic

#636BB2 #B2636B #6BB263

tetradic

#636BB2 #B26393 #B2AA63 #63B283

square

#636BB2 #B26393 #B2AA63 #63B283

split-complementary

#636BB2 #B28363 #93B263

monochromatic

#333868 #474F90 #636BB2 #8C92C6 #B5B9DA

Accessibility & contrast

On white

4.91

#636BB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#636BB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636BB2

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636BB2	#FFFFFF	#000000	##FFFFFF
##636BB2	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5174B5

Deuteranopia (green-blind)

#4B6EB0

Tritanopia (blue-blind)

#497986

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #636bb2;
/* rgb */ color: rgb(99, 107, 178);
/* oklch */ color: oklch(55.3% 0.110 277.3);

Tailwind

colors: {
  custom: {
    50: '#9395c9',
    500: '#636bb2',
    950: '#000000',
  },
}

SCSS

$custom: #636bb2;
$custom-light: #9395c9;
$custom-dark: #000000;

JSON

{
  "hex": "#636bb2",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 178
  },
  "hsl": {
    "h": 233.924,
    "s": 33.906,
    "l": 54.314
  },
  "oklch": {
    "l": 0.55313,
    "c": 0.11021,
    "h": 277.3
  },
  "luminance": 0.16382
}

Semantic roles & 50–950 ramp

primary

#636BB2

secondary

#C9C6A8

accent

#BF5ECA

background

#F9F9FC

surface

#F2F1F8

border

#CCCBD1

text

#0D0D13

muted

#7E7E82

Preview Lab

Preview with #636BB2

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

Preview Lab → · Contrast checker → · Palette generator →