#42479F#42479F

#42479F is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.4% C 0.140 H 276.6°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#42479F
RGB	rgb(66, 71, 159)
HSL	hsl(237, 41%, 44%)
HSV	hsv(237, 58%, 62%)
CMYK	cmyk(58.5%, 55.3%, 0%, 37.6%)
CIE-LAB	lab(34.33, 24.91, -48.65)
CIE-LCH	lch(34.33, 54.66, 297.12°)
OKLab	oklab(44.37% 0.0161 -0.1394)
OKLCH	oklch(44.37% 0.14 276.6)
XYZ	xyz(10.7560, 8.1672, 33.8038)
Luminance	0.0817 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42479F #9F9A42

analogous

#42769F #42479F #6C429F

triadic

#42479F #9F4247 #479F42

tetradic

#42479F #9F4276 #9F9A42 #429F6C

square

#42479F #9F4276 #9F9A42 #429F6C

split-complementary

#42479F #9F6C42 #769F42

monochromatic

#1E2049 #303474 #42479F #6166BD #8C90CF

Accessibility & contrast

On white

7.97

#42479F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#42479F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42479F

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42479F	#FFFFFF	#000000	##FFFFFF
##42479F	1.00	7.97	2.63	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C55A2

Deuteranopia (green-blind)

#004D9D

Tritanopia (blue-blind)

#055B6C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #42479f;
/* rgb */ color: rgb(66, 71, 159);
/* oklch */ color: oklch(44.4% 0.140 276.6);

Tailwind

colors: {
  custom: {
    50: '#7f7abc',
    500: '#42479f',
    950: '#000000',
  },
}

SCSS

$custom: #42479f;
$custom-light: #7f7abc;
$custom-dark: #000000;

JSON

{
  "hex": "#42479f",
  "rgb": {
    "r": 66,
    "g": 71,
    "b": 159
  },
  "hsl": {
    "h": 236.774,
    "s": 41.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.4437,
    "c": 0.14033,
    "h": 276.6
  },
  "luminance": 0.08168
}

Semantic roles & 50–950 ramp

primary

#42479F

secondary

#BAB782

accent

#CB57D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #42479F

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

Preview Lab → · Contrast checker → · Palette generator →