#42489E#42489E

#42489E is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.5% C 0.138 H 276.3°. Best body text is #FFFFFF at 7.92:1 contrast (WCAG AA passes).

Color values

HEX	#42489E
RGB	rgb(66, 72, 158)
HSL	hsl(236, 41%, 44%)
HSV	hsv(236, 58%, 62%)
CMYK	cmyk(58.2%, 54.4%, 0%, 38%)
CIE-LAB	lab(34.52, 23.92, -47.74)
CIE-LCH	lch(34.52, 53.40, 296.61°)
OKLab	oklab(44.49% 0.015 -0.1367)
OKLCH	oklch(44.49% 0.138 276.3)
XYZ	xyz(10.7337, 8.2608, 33.3700)
Luminance	0.0826 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42489E #9E9842

analogous

#42769E #42489E #6A429E

triadic

#42489E #9E4248 #489E42

tetradic

#42489E #9E4276 #9E9842 #429E6A

square

#42489E #9E4276 #9E9842 #429E6A

split-complementary

#42489E #9E6A42 #769E42

monochromatic

#1E2148 #303473 #42489E #6066BD #8C90CF

Accessibility & contrast

On white

7.92

#42489E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#42489E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #42489E

7.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42489E	#FFFFFF	#000000	##FFFFFF
##42489E	1.00	7.92	2.65	7.92
#FFFFFF	7.92	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1355A1

Deuteranopia (green-blind)

#004D9C

Tritanopia (blue-blind)

#085C6C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #42489e;
/* rgb */ color: rgb(66, 72, 158);
/* oklch */ color: oklch(44.5% 0.138 276.3);

Tailwind

colors: {
  custom: {
    50: '#7f7abb',
    500: '#42489e',
    950: '#000000',
  },
}

SCSS

$custom: #42489e;
$custom-light: #7f7abb;
$custom-dark: #000000;

JSON

{
  "hex": "#42489e",
  "rgb": {
    "r": 66,
    "g": 72,
    "b": 158
  },
  "hsl": {
    "h": 236.087,
    "s": 41.071,
    "l": 43.922
  },
  "oklch": {
    "l": 0.44491,
    "c": 0.13753,
    "h": 276.3
  },
  "luminance": 0.08262
}

Semantic roles & 50–950 ramp

primary

#42489E

secondary

#BAB682

accent

#C957D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0912

muted

#7C7B81

Preview Lab

Preview with #42489E

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

Preview Lab → · Contrast checker → · Palette generator →