#3E37BB#3E37BB

#3E37BB is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.7% C 0.198 H 276.7°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#3E37BB
RGB	rgb(62, 55, 187)
HSL	hsl(243, 55%, 47%)
HSV	hsv(243, 71%, 73%)
CMYK	cmyk(66.8%, 70.6%, 0%, 26.7%)
CIE-LAB	lab(32.58, 43.66, -68.22)
CIE-LCH	lch(32.58, 81.00, 302.62°)
OKLab	oklab(43.73% 0.0231 -0.197)
OKLCH	oklch(43.73% 0.198 276.7)
XYZ	xyz(12.3195, 7.3433, 47.7722)
Luminance	0.0734 (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

#3E37BB #B4BB37

analogous

#3772BB #3E37BB #8037BB

triadic

#3E37BB #BB3E37 #37BB3E

tetradic

#3E37BB #BB3772 #B4BB37 #37BB80

square

#3E37BB #BB3772 #B4BB37 #37BB80

split-complementary

#3E37BB #BB8037 #72BB37

monochromatic

#1F1B5C #2E298C #3E37BB #655FD0 #938EDE

Accessibility & contrast

On white

8.51

#3E37BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3E37BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3E37BB

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E37BB	#FFFFFF	#000000	##FFFFFF
##3E37BB	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BF

Deuteranopia (green-blind)

#0047B9

Tritanopia (blue-blind)

#005B75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3e37bb;
/* rgb */ color: rgb(62, 55, 187);
/* oklch */ color: oklch(43.7% 0.198 276.7);

Tailwind

colors: {
  custom: {
    50: '#846fd1',
    500: '#3e37bb',
    950: '#000000',
  },
}

SCSS

$custom: #3e37bb;
$custom-light: #846fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3e37bb",
  "rgb": {
    "r": 62,
    "g": 55,
    "b": 187
  },
  "hsl": {
    "h": 243.182,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.43731,
    "c": 0.19838,
    "h": 276.7
  },
  "luminance": 0.07344
}

Semantic roles & 50–950 ramp

primary

#3E37BB

secondary

#C5C985

accent

#DE4AD6

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3E37BB

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

Preview Lab → · Contrast checker → · Palette generator →