#3D37BB#3D37BB

#3D37BB is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.7% C 0.199 H 276.3°. Best body text is #FFFFFF at 8.53:1 contrast (WCAG AA passes).

Color values

HEX	#3D37BB
RGB	rgb(61, 55, 187)
HSL	hsl(243, 55%, 47%)
HSV	hsv(243, 71%, 73%)
CMYK	cmyk(67.4%, 70.6%, 0%, 26.7%)
CIE-LAB	lab(32.51, 43.54, -68.34)
CIE-LCH	lch(32.51, 81.03, 302.50°)
OKLab	oklab(43.66% 0.0218 -0.1974)
OKLCH	oklch(43.66% 0.199 276.3)
XYZ	xyz(12.2574, 7.3112, 47.7693)
Luminance	0.0731 (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

#3D37BB #B5BB37

analogous

#3773BB #3D37BB #7F37BB

triadic

#3D37BB #BB3D37 #37BB3D

tetradic

#3D37BB #BB3773 #B5BB37 #37BB7F

square

#3D37BB #BB3773 #B5BB37 #37BB7F

split-complementary

#3D37BB #BB7F37 #73BB37

monochromatic

#1E1B5C #2E298C #3D37BB #645FD0 #928EDE

Accessibility & contrast

On white

8.53

#3D37BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#3D37BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3D37BB

8.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D37BB	#FFFFFF	#000000	##FFFFFF
##3D37BB	1.00	8.53	2.46	8.53
#FFFFFF	8.53	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BF

Deuteranopia (green-blind)

#0047B9

Tritanopia (blue-blind)

#005B75

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #3d37bb;
/* rgb */ color: rgb(61, 55, 187);
/* oklch */ color: oklch(43.7% 0.199 276.3);

Tailwind

colors: {
  custom: {
    50: '#836fd1',
    500: '#3d37bb',
    950: '#000000',
  },
}

SCSS

$custom: #3d37bb;
$custom-light: #836fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3d37bb",
  "rgb": {
    "r": 61,
    "g": 55,
    "b": 187
  },
  "hsl": {
    "h": 242.727,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.43662,
    "c": 0.1986,
    "h": 276.3
  },
  "luminance": 0.07312
}

Semantic roles & 50–950 ramp

primary

#3D37BB

secondary

#C5C985

accent

#DE4AD7

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3D37BB

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

Preview Lab → · Contrast checker → · Palette generator →