#42489C#42489C

#42489C is a dark, vivid blue. Relative luminance 0.082; OKLCH L 44.3% C 0.135 H 276.3°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#42489C
RGB	rgb(66, 72, 156)
HSL	hsl(236, 41%, 44%)
HSV	hsv(236, 58%, 61%)
CMYK	cmyk(57.7%, 53.8%, 0%, 38.8%)
CIE-LAB	lab(34.38, 23.23, -46.76)
CIE-LCH	lch(34.38, 52.21, 296.42°)
OKLab	oklab(44.34% 0.0149 -0.1338)
OKLCH	oklch(44.34% 0.135 276.3)
XYZ	xyz(10.5630, 8.1925, 32.4707)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42489C #9C9642

analogous

#42759C #42489C #69429C

triadic

#42489C #9C4248 #489C42

tetradic

#42489C #9C4275 #9C9642 #429C69

square

#42489C #9C4275 #9C9642 #429C69

split-complementary

#42489C #9C6942 #759C42

monochromatic

#1E2046 #303471 #42489C #6066BC #8B8FCE

Accessibility & contrast

On white

7.96

#42489C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#42489C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42489C

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42489C	#FFFFFF	#000000	##FFFFFF
##42489C	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17559F

Deuteranopia (green-blind)

#004D9A

Tritanopia (blue-blind)

#0D5B6B

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #42489c;
/* rgb */ color: rgb(66, 72, 156);
/* oklch */ color: oklch(44.3% 0.135 276.3);

Tailwind

colors: {
  custom: {
    50: '#7e7aba',
    500: '#42489c',
    950: '#000000',
  },
}

SCSS

$custom: #42489c;
$custom-light: #7e7aba;
$custom-dark: #000000;

JSON

{
  "hex": "#42489c",
  "rgb": {
    "r": 66,
    "g": 72,
    "b": 156
  },
  "hsl": {
    "h": 236,
    "s": 40.541,
    "l": 43.529
  },
  "oklch": {
    "l": 0.44341,
    "c": 0.13464,
    "h": 276.3
  },
  "luminance": 0.08193
}

Semantic roles & 50–950 ramp

primary

#42489C

secondary

#B9B581

accent

#C857D0

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #42489C

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

Preview Lab → · Contrast checker → · Palette generator →