#3720C1#3720C1

#3720C1 is a dark, highly saturated blue. Relative luminance 0.057; OKLCH L 41.0% C 0.228 H 276.0°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#3720C1
RGB	rgb(55, 32, 193)
HSL	hsl(249, 72%, 44%)
HSV	hsv(249, 83%, 76%)
CMYK	cmyk(71.5%, 83.4%, 0%, 24.3%)
CIE-LAB	lab(28.63, 56.47, -78.30)
CIE-LCH	lch(28.63, 96.54, 305.80°)
OKLab	oklab(41.01% 0.0236 -0.2263)
OKLCH	oklch(41.01% 0.228 276)
XYZ	xyz(11.7145, 5.6944, 50.9235)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3720C1 #AAC120

analogous

#205AC1 #3720C1 #8820C1

triadic

#3720C1 #C13720 #20C137

tetradic

#3720C1 #C1205A #AAC120 #20C188

square

#3720C1 #C1205A #AAC120 #20C188

split-complementary

#3720C1 #C18820 #5AC120

monochromatic

#190F58 #28178D #3720C1 #563FDF #8474E8

Accessibility & contrast

On white

9.82

#3720C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#3720C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3720C1

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3720C1	#FFFFFF	#000000	##FFFFFF
##3720C1	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AC5

Deuteranopia (green-blind)

#003CBE

Tritanopia (blue-blind)

#005473

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #3720c1;
/* rgb */ color: rgb(55, 32, 193);
/* oklch */ color: oklch(41.0% 0.228 276.0);

Tailwind

colors: {
  custom: {
    50: '#8462d5',
    500: '#3720c1',
    950: '#000000',
  },
}

SCSS

$custom: #3720c1;
$custom-light: #8462d5;
$custom-dark: #000000;

JSON

{
  "hex": "#3720c1",
  "rgb": {
    "r": 55,
    "g": 32,
    "b": 193
  },
  "hsl": {
    "h": 248.571,
    "s": 71.556,
    "l": 44.118
  },
  "oklch": {
    "l": 0.41014,
    "c": 0.22752,
    "h": 276
  },
  "luminance": 0.05696
}

Semantic roles & 50–950 ramp

primary

#3720C1

secondary

#C1CF6E

accent

#EE3AD4

background

#F9F6FD

surface

#F1EBFA

border

#CBC6D3

text

#0D0514

muted

#7E7A83

Preview Lab

Preview with #3720C1

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

Preview Lab → · Contrast checker → · Palette generator →