#42398F#42398F

#42398F is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.5% C 0.137 H 283.1°. Best body text is #FFFFFF at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#42398F
RGB	rgb(66, 57, 143)
HSL	hsl(246, 43%, 39%)
HSV	hsv(246, 60%, 56%)
CMYK	cmyk(53.8%, 60.1%, 0%, 43.9%)
CIE-LAB	lab(29.58, 28.57, -46.59)
CIE-LCH	lch(29.58, 54.65, 301.52°)
OKLab	oklab(40.47% 0.0312 -0.1334)
OKLCH	oklch(40.47% 0.137 283.1)
XYZ	xyz(8.6663, 6.0672, 26.6957)
Luminance	0.0607 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42398F #868F39

analogous

#395B8F #42398F #6D398F

triadic

#42398F #8F4239 #398F42

tetradic

#42398F #8F395B #868F39 #398F6D

square

#42398F #8F395B #868F39 #398F6D

split-complementary

#42398F #8F6D39 #5B8F39

monochromatic

#1A1637 #2E2863 #42398F #584DB8 #8179CA

Accessibility & contrast

On white

9.49

#42398F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#42398F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42398F

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42398F	#FFFFFF	#000000	##FFFFFF
##42398F	1.00	9.49	2.21	9.49
#FFFFFF	9.49	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004892

Deuteranopia (green-blind)

#00438D

Tritanopia (blue-blind)

#224D5E

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #42398f;
/* rgb */ color: rgb(66, 57, 143);
/* oklch */ color: oklch(40.5% 0.137 283.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#42398f",
  "rgb": {
    "r": 66,
    "g": 57,
    "b": 143
  },
  "hsl": {
    "h": 246.279,
    "s": 43,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40472,
    "c": 0.13703,
    "h": 283.1
  },
  "luminance": 0.06068
}

Semantic roles & 50–950 ramp

primary

#42398F

secondary

#ACB371

accent

#D355C6

background

#F8F6FA

surface

#EFECF5

border

#CAC7CF

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #42398F

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

Preview Lab → · Contrast checker → · Palette generator →