#42398E#42398E

#42398E is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.4% C 0.136 H 283.3°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#42398E
RGB	rgb(66, 57, 142)
HSL	hsl(246, 43%, 39%)
HSV	hsv(246, 60%, 56%)
CMYK	cmyk(53.5%, 59.9%, 0%, 44.3%)
CIE-LAB	lab(29.51, 28.25, -46.09)
CIE-LCH	lch(29.51, 54.06, 301.50°)
OKLab	oklab(40.39% 0.0312 -0.132)
OKLCH	oklch(40.39% 0.136 283.3)
XYZ	xyz(8.5909, 6.0370, 26.2985)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42398E #858E39

analogous

#395B8E #42398E #6D398E

triadic

#42398E #8E4239 #398E42

tetradic

#42398E #8E395B #858E39 #398E6D

square

#42398E #8E395B #858E39 #398E6D

split-complementary

#42398E #8E6D39 #5B8E39

monochromatic

#191637 #2E2762 #42398E #584DB7 #8178C9

Accessibility & contrast

On white

9.51

#42398E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#42398E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42398E

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42398E	#FFFFFF	#000000	##FFFFFF
##42398E	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004891

Deuteranopia (green-blind)

#00438C

Tritanopia (blue-blind)

#234D5E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #42398e;
/* rgb */ color: rgb(66, 57, 142);
/* oklch */ color: oklch(40.4% 0.136 283.3);

Tailwind

colors: {
  custom: {
    50: '#7d70b0',
    500: '#42398e',
    950: '#000000',
  },
}

SCSS

$custom: #42398e;
$custom-light: #7d70b0;
$custom-dark: #000000;

JSON

{
  "hex": "#42398e",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 142
  },
  "hsl": {
    "h": 246.353,
    "s": 42.714,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40392,
    "c": 0.13562,
    "h": 283.3
  },
  "luminance": 0.06037
}

Semantic roles & 50–950 ramp

primary

#42398E

secondary

#ABB271

accent

#D255C5

background

#F7F6FA

surface

#EEECF5

border

#C9C7CF

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #42398E

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

Preview Lab → · Contrast checker → · Palette generator →