#42479A#42479A

#42479A is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.0% C 0.133 H 276.8°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#42479A
RGB	rgb(66, 71, 154)
HSL	hsl(237, 40%, 43%)
HSV	hsv(237, 57%, 60%)
CMYK	cmyk(57.1%, 53.9%, 0%, 39.6%)
CIE-LAB	lab(33.98, 23.20, -46.20)
CIE-LCH	lch(33.98, 51.70, 296.67°)
OKLab	oklab(43.99% 0.0159 -0.1322)
OKLCH	oklch(43.99% 0.133 276.8)
XYZ	xyz(10.3309, 7.9971, 31.5648)
Luminance	0.0800 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42479A #9A9542

analogous

#42739A #42479A #69429A

triadic

#42479A #9A4247 #479A42

tetradic

#42479A #9A4273 #9A9542 #429A69

square

#42479A #9A4273 #9A9542 #429A69

split-complementary

#42479A #9A6942 #739A42

monochromatic

#1D1F44 #30336F #42479A #5F64BA #8A8DCD

Accessibility & contrast

On white

8.08

#42479A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#42479A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42479A

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42479A	#FFFFFF	#000000	##FFFFFF
##42479A	1.00	8.08	2.60	8.08
#FFFFFF	8.08	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17549D

Deuteranopia (green-blind)

#024C98

Tritanopia (blue-blind)

#115A69

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #42479a;
/* rgb */ color: rgb(66, 71, 154);
/* oklch */ color: oklch(44.0% 0.133 276.8);

Tailwind

colors: {
  custom: {
    50: '#7e7ab8',
    500: '#42479a',
    950: '#000000',
  },
}

SCSS

$custom: #42479a;
$custom-light: #7e7ab8;
$custom-dark: #000000;

JSON

{
  "hex": "#42479a",
  "rgb": {
    "r": 66,
    "g": 71,
    "b": 154
  },
  "hsl": {
    "h": 236.591,
    "s": 40,
    "l": 43.137
  },
  "oklch": {
    "l": 0.43994,
    "c": 0.13314,
    "h": 276.8
  },
  "luminance": 0.07998
}

Semantic roles & 50–950 ramp

primary

#42479A

secondary

#B8B480

accent

#C958D0

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0911

muted

#7C7B80

Preview Lab

Preview with #42479A

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

Preview Lab → · Contrast checker → · Palette generator →