#3B42CB#3B42CB

#3B42CB is a mid, highly saturated blue. Relative luminance 0.091; OKLCH L 46.8% C 0.207 H 272.9°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#3B42CB
RGB	rgb(59, 66, 203)
HSL	hsl(237, 58%, 51%)
HSV	hsv(237, 71%, 80%)
CMYK	cmyk(70.9%, 67.5%, 0%, 20.4%)
CIE-LAB	lab(36.25, 42.14, -71.57)
CIE-LCH	lch(36.25, 83.05, 300.49°)
OKLab	oklab(46.77% 0.0104 -0.2069)
OKLCH	oklch(46.77% 0.207 272.9)
XYZ	xyz(14.5277, 9.1366, 57.4862)
Luminance	0.0914 (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

#3B42CB #CBC43B

analogous

#3B8ACB #3B42CB #7C3BCB

triadic

#3B42CB #CB3B42 #42CB3B

tetradic

#3B42CB #CB3B8A #CBC43B #3BCB7C

square

#3B42CB #CB3B8A #CBC43B #3BCB7C

split-complementary

#3B42CB #CB7C3B #8ACB3B

monochromatic

#1D216E #2A309F #3B42CB #6B71D8 #9C9FE5

Accessibility & contrast

On white

7.43

#3B42CB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#3B42CB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3B42CB

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B42CB	#FFFFFF	#000000	##FFFFFF
##3B42CB	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CCF

Deuteranopia (green-blind)

#004FC8

Tritanopia (blue-blind)

#006781

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #3b42cb;
/* rgb */ color: rgb(59, 66, 203);
/* oklch */ color: oklch(46.8% 0.207 272.9);

Tailwind

colors: {
  custom: {
    50: '#8577dc',
    500: '#3b42cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b42cb;
$custom-light: #8577dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3b42cb",
  "rgb": {
    "r": 59,
    "g": 66,
    "b": 203
  },
  "hsl": {
    "h": 237.083,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.46774,
    "c": 0.20714,
    "h": 272.9
  },
  "luminance": 0.09138
}

Semantic roles & 50–950 ramp

primary

#3B42CB

secondary

#D1CE91

accent

#DA47E1

background

#F8F7FD

surface

#F0EDFB

border

#CBC8D4

text

#0D0815

muted

#7D7B83

Preview Lab

Preview with #3B42CB

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

Preview Lab → · Contrast checker → · Palette generator →