#3637CD#3637CD

#3637CD is a mid, highly saturated blue. Relative luminance 0.079; OKLCH L 45.0% C 0.222 H 272.7°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#3637CD
RGB	rgb(54, 55, 205)
HSL	hsl(240, 60%, 51%)
HSV	hsv(240, 74%, 80%)
CMYK	cmyk(73.7%, 73.2%, 0%, 19.6%)
CIE-LAB	lab(33.82, 48.70, -76.73)
CIE-LCH	lch(33.82, 90.88, 302.40°)
OKLab	oklab(45.01% 0.0105 -0.222)
OKLCH	oklch(45.01% 0.222 272.7)
XYZ	xyz(13.9033, 7.9230, 58.5423)
Luminance	0.0792 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3637CD #CDCC36

analogous

#3682CD #3637CD #8136CD

triadic

#3637CD #CD3637 #37CD36

tetradic

#3637CD #CD3682 #CDCC36 #36CD81

square

#3637CD #CD3682 #CDCC36 #36CD81

split-complementary

#3637CD #CD8136 #82CD36

monochromatic

#1B1C6D #27289E #3637CD #6768D9 #9899E5

Accessibility & contrast

On white

8.12

#3637CD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#3637CD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3637CD

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3637CD	#FFFFFF	#000000	##FFFFFF
##3637CD	1.00	8.12	2.58	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057D1

Deuteranopia (green-blind)

#0048CA

Tritanopia (blue-blind)

#00627F

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3637cd;
/* rgb */ color: rgb(54, 55, 205);
/* oklch */ color: oklch(45.0% 0.222 272.7);

Tailwind

colors: {
  custom: {
    50: '#8470de',
    500: '#3637cd',
    950: '#000000',
  },
}

SCSS

$custom: #3637cd;
$custom-light: #8470de;
$custom-dark: #000000;

JSON

{
  "hex": "#3637cd",
  "rgb": {
    "r": 54,
    "g": 55,
    "b": 205
  },
  "hsl": {
    "h": 239.603,
    "s": 60.159,
    "l": 50.784
  },
  "oklch": {
    "l": 0.45014,
    "c": 0.22229,
    "h": 272.7
  },
  "luminance": 0.07924
}

Semantic roles & 50–950 ramp

primary

#3637CD

secondary

#D1D08E

accent

#E244E3

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3637CD

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

Preview Lab → · Contrast checker → · Palette generator →