#424B9B#424B9B

#424B9B is a dark, vivid blue. Relative luminance 0.086; OKLCH L 44.9% C 0.129 H 275.1°. Best body text is #FFFFFF at 7.75:1 contrast (WCAG AA passes).

Color values

HEX	#424B9B
RGB	rgb(66, 75, 155)
HSL	hsl(234, 40%, 43%)
HSV	hsv(234, 57%, 61%)
CMYK	cmyk(57.4%, 51.6%, 0%, 39.2%)
CIE-LAB	lab(35.12, 20.93, -44.97)
CIE-LCH	lch(35.12, 49.60, 294.96°)
OKLab	oklab(44.87% 0.0115 -0.1285)
OKLCH	oklch(44.87% 0.129 275.1)
XYZ	xyz(10.6773, 8.5562, 32.0929)
Luminance	0.0856 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#424B9B #9B9242

analogous

#42779B #424B9B #65429B

triadic

#424B9B #9B424B #4B9B42

tetradic

#424B9B #9B4277 #9B9242 #429B65

square

#424B9B #9B4277 #9B9242 #429B65

split-complementary

#424B9B #9B6542 #779B42

monochromatic

#1D2145 #303670 #424B9B #5F69BB #8A91CD

Accessibility & contrast

On white

7.75

#424B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#424B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #424B9B

7.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##424B9B	#FFFFFF	#000000	##FFFFFF
##424B9B	1.00	7.75	2.71	7.75
#FFFFFF	7.75	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#21569E

Deuteranopia (green-blind)

#124F99

Tritanopia (blue-blind)

#0E5D6C

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #424b9b;
/* rgb */ color: rgb(66, 75, 155);
/* oklch */ color: oklch(44.9% 0.129 275.1);

Tailwind

colors: {
  custom: {
    50: '#7e7db9',
    500: '#424b9b',
    950: '#000000',
  },
}

SCSS

$custom: #424b9b;
$custom-light: #7e7db9;
$custom-dark: #000000;

JSON

{
  "hex": "#424b9b",
  "rgb": {
    "r": 66,
    "g": 75,
    "b": 155
  },
  "hsl": {
    "h": 233.933,
    "s": 40.271,
    "l": 43.333
  },
  "oklch": {
    "l": 0.44872,
    "c": 0.12904,
    "h": 275.1
  },
  "luminance": 0.08557
}

Semantic roles & 50–950 ramp

primary

#424B9B

secondary

#B8B381

accent

#C458D0

background

#F8F7FB

surface

#EFEEF6

border

#CAC9D0

text

#0A0911

muted

#7C7B80

Preview Lab

Preview with #424B9B

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

Preview Lab → · Contrast checker → · Palette generator →