#424C8B#424C8B

#424C8B is a dark, moderate blue. Relative luminance 0.082; OKLCH L 44.0% C 0.104 H 274.5°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#424C8B
RGB	rgb(66, 76, 139)
HSL	hsl(232, 36%, 40%)
HSV	hsv(232, 53%, 55%)
CMYK	cmyk(52.5%, 45.3%, 0%, 45.5%)
CIE-LAB	lab(34.38, 14.82, -36.43)
CIE-LCH	lch(34.38, 39.32, 292.14°)
OKLab	oklab(43.99% 0.0082 -0.1034)
OKLCH	oklch(43.99% 0.104 274.5)
XYZ	xyz(9.4899, 8.1906, 25.5020)
Luminance	0.0819 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424C8B #8B8142

analogous

#42708B #424C8B #5C428B

triadic

#424C8B #8B424C #4C8B42

tetradic

#424C8B #8B4270 #8B8142 #428B5C

square

#424C8B #8B4270 #8B8142 #428B5C

split-complementary

#424C8B #8B5C42 #708B42

monochromatic

#1B1F38 #2E3562 #424C8B #5A66B1 #838CC4

Accessibility & contrast

On white

7.96

#424C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#424C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424C8B

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424C8B	#FFFFFF	#000000	##FFFFFF
##424C8B	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)

#32548D

Deuteranopia (green-blind)

#2A4E8A

Tritanopia (blue-blind)

#235A64

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #424c8b;
/* rgb */ color: rgb(66, 76, 139);
/* oklch */ color: oklch(44.0% 0.104 274.5);

Tailwind

colors: {
  custom: {
    50: '#7c7dad',
    500: '#424c8b',
    950: '#000000',
  },
}

SCSS

$custom: #424c8b;
$custom-light: #7c7dad;
$custom-dark: #000000;

JSON

{
  "hex": "#424c8b",
  "rgb": {
    "r": 66,
    "g": 76,
    "b": 139
  },
  "hsl": {
    "h": 231.781,
    "s": 35.61,
    "l": 40.196
  },
  "oklch": {
    "l": 0.43985,
    "c": 0.10376,
    "h": 274.5
  },
  "luminance": 0.08191
}

Semantic roles & 50–950 ramp

primary

#424C8B

secondary

#AFA87A

accent

#BC5CCC

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0910

muted

#7C7B7F

Preview Lab

Preview with #424C8B

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

Preview Lab → · Contrast checker → · Palette generator →