#424B99#424B99

#424B99 is a dark, vivid blue. Relative luminance 0.085; OKLCH L 44.7% C 0.126 H 275.1°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#424B99
RGB	rgb(66, 75, 153)
HSL	hsl(234, 40%, 43%)
HSV	hsv(234, 57%, 60%)
CMYK	cmyk(56.9%, 51%, 0%, 40%)
CIE-LAB	lab(34.98, 20.24, -43.98)
CIE-LCH	lch(34.98, 48.41, 294.72°)
OKLab	oklab(44.73% 0.0113 -0.1256)
OKLCH	oklch(44.73% 0.126 275.1)
XYZ	xyz(10.5108, 8.4896, 31.2156)
Luminance	0.0849 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424B99 #999042

analogous

#427699 #424B99 #644299

triadic

#424B99 #99424B #4B9942

tetradic

#424B99 #994276 #999042 #429964

square

#424B99 #994276 #999042 #429964

split-complementary

#424B99 #996442 #769942

monochromatic

#1D2143 #30366E #424B99 #5E68BA #8990CC

Accessibility & contrast

On white

7.78

#424B99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#424B99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424B99

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424B99	#FFFFFF	#000000	##FFFFFF
##424B99	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#23569C

Deuteranopia (green-blind)

#164F97

Tritanopia (blue-blind)

#125C6B

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #424b99;
/* rgb */ color: rgb(66, 75, 153);
/* oklch */ color: oklch(44.7% 0.126 275.1);

Tailwind

colors: {
  custom: {
    50: '#7e7db7',
    500: '#424b99',
    950: '#000000',
  },
}

SCSS

$custom: #424b99;
$custom-light: #7e7db7;
$custom-dark: #000000;

JSON

{
  "hex": "#424b99",
  "rgb": {
    "r": 66,
    "g": 75,
    "b": 153
  },
  "hsl": {
    "h": 233.793,
    "s": 39.726,
    "l": 42.941
  },
  "oklch": {
    "l": 0.44729,
    "c": 0.12612,
    "h": 275.1
  },
  "luminance": 0.0849
}

Semantic roles & 50–950 ramp

primary

#424B99

secondary

#B7B180

accent

#C358D0

background

#F8F7FB

surface

#EFEEF6

border

#CAC9D0

text

#0A0911

muted

#7C7B80

Preview Lab

Preview with #424B99

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

Preview Lab → · Contrast checker → · Palette generator →