#636BD2#636BD2

#636BD2 is a mid, vivid blue. Relative luminance 0.178; OKLCH L 57.3% C 0.156 H 276.9°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#636BD2
RGB	rgb(99, 107, 210)
HSL	hsl(236, 55%, 61%)
HSV	hsv(236, 53%, 82%)
CMYK	cmyk(52.9%, 49%, 0%, 17.6%)
CIE-LAB	lab(49.28, 25.78, -54.32)
CIE-LCH	lch(49.28, 60.13, 295.39°)
OKLab	oklab(57.27% 0.0188 -0.1549)
OKLCH	oklch(57.27% 0.156 276.9)
XYZ	xyz(22.0325, 17.8198, 63.2388)
Luminance	0.1782 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636BD2 #D2CA63

analogous

#63A2D2 #636BD2 #9263D2

triadic

#636BD2 #D2636B #6BD263

tetradic

#636BD2 #D263A2 #D2CA63 #63D292

square

#636BD2 #D263A2 #D2CA63 #63D292

split-complementary

#636BD2 #D29263 #A2D263

monochromatic

#2A3191 #3741C0 #636BD2 #9298E0 #C2C5ED

Accessibility & contrast

On white

4.60

#636BD2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#636BD2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #636BD2

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636BD2	#FFFFFF	#000000	##FFFFFF
##636BD2	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A7AD6

Deuteranopia (green-blind)

#2C71D0

Tritanopia (blue-blind)

#318294

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #636bd2;
/* rgb */ color: rgb(99, 107, 210);
/* oklch */ color: oklch(57.3% 0.156 276.9);

Tailwind

colors: {
  custom: {
    50: '#9795e0',
    500: '#636bd2',
    950: '#000000',
  },
}

SCSS

$custom: #636bd2;
$custom-light: #9795e0;
$custom-dark: #000000;

JSON

{
  "hex": "#636bd2",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 210
  },
  "hsl": {
    "h": 235.676,
    "s": 55.224,
    "l": 60.588
  },
  "oklch": {
    "l": 0.57272,
    "c": 0.15603,
    "h": 276.9
  },
  "luminance": 0.17821
}

Semantic roles & 50–950 ramp

primary

#636BD2

secondary

#DEDAB3

accent

#B723C3

background

#F9F9FD

surface

#F2F1FB

border

#CCCBD4

text

#0E0D15

muted

#7E7E83

Preview Lab

Preview with #636BD2

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

Preview Lab → · Contrast checker → · Palette generator →