#3B37C8#3B37C8

#3B37C8 is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.8% C 0.215 H 274.6°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#3B37C8
RGB	rgb(59, 55, 200)
HSL	hsl(242, 57%, 50%)
HSV	hsv(242, 73%, 78%)
CMYK	cmyk(70.5%, 72.5%, 0%, 21.6%)
CIE-LAB	lab(33.63, 47.55, -74.13)
CIE-LCH	lch(33.63, 88.07, 302.68°)
OKLab	oklab(44.81% 0.0172 -0.2143)
OKLCH	oklch(44.81% 0.215 274.6)
XYZ	xyz(13.5917, 7.8310, 55.4276)
Luminance	0.0783 (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

#3B37C8 #C4C837

analogous

#377CC8 #3B37C8 #8337C8

triadic

#3B37C8 #C83B37 #37C83B

tetradic

#3B37C8 #C8377C #C4C837 #37C883

square

#3B37C8 #C8377C #C4C837 #37C883

split-complementary

#3B37C8 #C88337 #7CC837

monochromatic

#1F1D68 #2D2A98 #3B37C8 #6A67D5 #9997E2

Accessibility & contrast

On white

8.18

#3B37C8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#3B37C8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B37C8

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B37C8	#FFFFFF	#000000	##FFFFFF
##3B37C8	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056CC

Deuteranopia (green-blind)

#0048C5

Tritanopia (blue-blind)

#00607C

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3b37c8;
/* rgb */ color: rgb(59, 55, 200);
/* oklch */ color: oklch(44.8% 0.215 274.6);

Tailwind

colors: {
  custom: {
    50: '#8570da',
    500: '#3b37c8',
    950: '#000000',
  },
}

SCSS

$custom: #3b37c8;
$custom-light: #8570da;
$custom-dark: #000000;

JSON

{
  "hex": "#3b37c8",
  "rgb": {
    "r": 59,
    "g": 55,
    "b": 200
  },
  "hsl": {
    "h": 241.655,
    "s": 56.863,
    "l": 50
  },
  "oklch": {
    "l": 0.44808,
    "c": 0.21503,
    "h": 274.6
  },
  "luminance": 0.07832
}

Semantic roles & 50–950 ramp

primary

#3B37C8

secondary

#CCCE8D

accent

#E048DC

background

#F9F6FD

surface

#F1ECFB

border

#CBC7D4

text

#0D0715

muted

#7E7A83

Preview Lab

Preview with #3B37C8

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

Preview Lab → · Contrast checker → · Palette generator →