#42319C#42319C

#42319C is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.2% C 0.165 H 283.3°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#42319C
RGB	rgb(66, 49, 156)
HSL	hsl(250, 52%, 40%)
HSV	hsv(250, 69%, 61%)
CMYK	cmyk(57.7%, 68.6%, 0%, 38.8%)
CIE-LAB	lab(28.78, 37.73, -55.85)
CIE-LCH	lch(28.78, 67.39, 304.04°)
OKLab	oklab(40.22% 0.0381 -0.1607)
OKLCH	oklch(40.22% 0.165 283.3)
XYZ	xyz(9.3440, 5.7546, 32.0644)
Luminance	0.0575 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42319C #8B9C31

analogous

#31559C #42319C #78319C

triadic

#42319C #9C4231 #319C42

tetradic

#42319C #9C3155 #8B9C31 #319C78

square

#42319C #9C3155 #8B9C31 #319C78

split-complementary

#42319C #9C7831 #559C31

monochromatic

#1B143F #2E226D #42319C #5A45C5 #8374D3

Accessibility & contrast

On white

9.76

#42319C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#42319C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42319C

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42319C	#FFFFFF	#000000	##FFFFFF
##42319C	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479F

Deuteranopia (green-blind)

#00409A

Tritanopia (blue-blind)

#134D62

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #42319c;
/* rgb */ color: rgb(66, 49, 156);
/* oklch */ color: oklch(40.2% 0.165 283.3);

Tailwind

colors: {
  custom: {
    50: '#806aba',
    500: '#42319c',
    950: '#000000',
  },
}

SCSS

$custom: #42319c;
$custom-light: #806aba;
$custom-dark: #000000;

JSON

{
  "hex": "#42319c",
  "rgb": {
    "r": 66,
    "g": 49,
    "b": 156
  },
  "hsl": {
    "h": 249.533,
    "s": 52.195,
    "l": 40.196
  },
  "oklch": {
    "l": 0.40224,
    "c": 0.16511,
    "h": 283.3
  },
  "luminance": 0.05755
}

Semantic roles & 50–950 ramp

primary

#42319C

secondary

#AFBB6D

accent

#DC4CC5

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #42319C

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

Preview Lab → · Contrast checker → · Palette generator →