#42398D#42398D

#42398D is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.3% C 0.134 H 283.4°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#42398D
RGB	rgb(66, 57, 141)
HSL	hsl(246, 42%, 39%)
HSV	hsv(246, 60%, 55%)
CMYK	cmyk(53.2%, 59.6%, 0%, 44.7%)
CIE-LAB	lab(29.43, 27.92, -45.60)
CIE-LCH	lch(29.43, 53.47, 301.48°)
OKLab	oklab(40.31% 0.0312 -0.1305)
OKLCH	oklch(40.31% 0.134 283.4)
XYZ	xyz(8.5162, 6.0071, 25.9049)
Luminance	0.0601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42398D #848D39

analogous

#395A8D #42398D #6C398D

triadic

#42398D #8D4239 #398D42

tetradic

#42398D #8D395A #848D39 #398D6C

square

#42398D #8D395A #848D39 #398D6C

split-complementary

#42398D #8D6C39 #5A8D39

monochromatic

#191636 #2E2761 #42398D #584CB7 #8178C8

Accessibility & contrast

On white

9.54

#42398D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#42398D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42398D

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42398D	#FFFFFF	#000000	##FFFFFF
##42398D	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004890

Deuteranopia (green-blind)

#00438B

Tritanopia (blue-blind)

#244C5D

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #42398d;
/* rgb */ color: rgb(66, 57, 141);
/* oklch */ color: oklch(40.3% 0.134 283.4);

Tailwind

colors: {
  custom: {
    50: '#7d70af',
    500: '#42398d',
    950: '#000000',
  },
}

SCSS

$custom: #42398d;
$custom-light: #7d70af;
$custom-dark: #000000;

JSON

{
  "hex": "#42398d",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 141
  },
  "hsl": {
    "h": 246.429,
    "s": 42.424,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40313,
    "c": 0.13421,
    "h": 283.4
  },
  "luminance": 0.06008
}

Semantic roles & 50–950 ramp

primary

#42398D

secondary

#ABB270

accent

#D256C5

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #42398D

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

Preview Lab → · Contrast checker → · Palette generator →