#42489D#42489D

#42489D is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.4% C 0.136 H 276.3°. Best body text is #FFFFFF at 7.94:1 contrast (WCAG AA passes).

Color values

HEX	#42489D
RGB	rgb(66, 72, 157)
HSL	hsl(236, 41%, 44%)
HSV	hsv(236, 58%, 62%)
CMYK	cmyk(58%, 54.1%, 0%, 38.4%)
CIE-LAB	lab(34.45, 23.58, -47.25)
CIE-LCH	lch(34.45, 52.80, 296.52°)
OKLab	oklab(44.42% 0.0149 -0.1353)
OKLCH	oklch(44.42% 0.136 276.3)
XYZ	xyz(10.6480, 8.2265, 32.9185)
Luminance	0.0823 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42489D #9D9742

analogous

#42759D #42489D #69429D

triadic

#42489D #9D4248 #489D42

tetradic

#42489D #9D4275 #9D9742 #429D69

square

#42489D #9D4275 #9D9742 #429D69

split-complementary

#42489D #9D6942 #759D42

monochromatic

#1E2047 #303472 #42489D #6066BC #8B90CE

Accessibility & contrast

On white

7.94

#42489D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#42489D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42489D

7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42489D	#FFFFFF	#000000	##FFFFFF
##42489D	1.00	7.94	2.65	7.94
#FFFFFF	7.94	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1555A0

Deuteranopia (green-blind)

#004D9B

Tritanopia (blue-blind)

#0A5B6B

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #42489d;
/* rgb */ color: rgb(66, 72, 157);
/* oklch */ color: oklch(44.4% 0.136 276.3);

Tailwind

colors: {
  custom: {
    50: '#7f7aba',
    500: '#42489d',
    950: '#000000',
  },
}

SCSS

$custom: #42489d;
$custom-light: #7f7aba;
$custom-dark: #000000;

JSON

{
  "hex": "#42489d",
  "rgb": {
    "r": 66,
    "g": 72,
    "b": 157
  },
  "hsl": {
    "h": 236.044,
    "s": 40.807,
    "l": 43.725
  },
  "oklch": {
    "l": 0.44416,
    "c": 0.13609,
    "h": 276.3
  },
  "luminance": 0.08227
}

Semantic roles & 50–950 ramp

primary

#42489D

secondary

#B9B682

accent

#C957D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #42489D

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

Preview Lab → · Contrast checker → · Palette generator →