#424B8B#424B8B

#424B8B is a dark, moderate blue. Relative luminance 0.081; OKLCH L 43.8% C 0.105 H 275.2°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#424B8B
RGB	rgb(66, 75, 139)
HSL	hsl(233, 36%, 40%)
HSV	hsv(233, 53%, 55%)
CMYK	cmyk(52.5%, 46%, 0%, 45.5%)
CIE-LAB	lab(34.09, 15.47, -36.88)
CIE-LCH	lch(34.09, 39.99, 292.77°)
OKLab	oklab(43.77% 0.0095 -0.1047)
OKLCH	oklch(43.77% 0.105 275.2)
XYZ	xyz(9.4216, 8.0539, 25.4792)
Luminance	0.0805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424B8B #8B8242

analogous

#426F8B #424B8B #5E428B

triadic

#424B8B #8B424B #4B8B42

tetradic

#424B8B #8B426F #8B8242 #428B5E

square

#424B8B #8B426F #8B8242 #428B5E

split-complementary

#424B8B #8B5E42 #6F8B42

monochromatic

#1B1E38 #2E3562 #424B8B #5A64B1 #838BC4

Accessibility & contrast

On white

8.04

#424B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#424B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424B8B

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424B8B	#FFFFFF	#000000	##FFFFFF
##424B8B	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#30538D

Deuteranopia (green-blind)

#294D8A

Tritanopia (blue-blind)

#235964

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #424b8b;
/* rgb */ color: rgb(66, 75, 139);
/* oklch */ color: oklch(43.8% 0.105 275.2);

Tailwind

colors: {
  custom: {
    50: '#7c7dad',
    500: '#424b8b',
    950: '#000000',
  },
}

SCSS

$custom: #424b8b;
$custom-light: #7c7dad;
$custom-dark: #000000;

JSON

{
  "hex": "#424b8b",
  "rgb": {
    "r": 66,
    "g": 75,
    "b": 139
  },
  "hsl": {
    "h": 232.603,
    "s": 35.61,
    "l": 40.196
  },
  "oklch": {
    "l": 0.4377,
    "c": 0.10518,
    "h": 275.2
  },
  "luminance": 0.08054
}

Semantic roles & 50–950 ramp

primary

#424B8B

secondary

#AFA87A

accent

#BE5CCC

background

#F7F7FA

surface

#EEEEF4

border

#C9C9CE

text

#0A0910

muted

#7C7B7F

Preview Lab

Preview with #424B8B

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

Preview Lab → · Contrast checker → · Palette generator →