#40429B#40429B

#40429B is a dark, vivid blue. Relative luminance 0.074; OKLCH L 42.9% C 0.142 H 277.6°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#40429B
RGB	rgb(64, 66, 155)
HSL	hsl(239, 42%, 43%)
HSV	hsv(239, 59%, 61%)
CMYK	cmyk(58.7%, 57.4%, 0%, 39.2%)
CIE-LAB	lab(32.60, 26.40, -49.04)
CIE-LCH	lch(32.60, 55.70, 298.29°)
OKLab	oklab(42.95% 0.0188 -0.1407)
OKLCH	oklch(42.95% 0.142 277.6)
XYZ	xyz(9.9771, 7.3523, 31.8974)
Luminance	0.0735 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40429B #9B9940

analogous

#40709B #40429B #6B409B

triadic

#40429B #9B4042 #429B40

tetradic

#40429B #9B4070 #9B9940 #409B6B

square

#40429B #9B4070 #9B9940 #409B6B

split-complementary

#40429B #9B6B40 #709B40

monochromatic

#1C1D44 #2E3070 #40429B #5C5EBC #8889CE

Accessibility & contrast

On white

8.50

#40429B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#40429B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40429B

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40429B	#FFFFFF	#000000	##FFFFFF
##40429B	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00509E

Deuteranopia (green-blind)

#004999

Tritanopia (blue-blind)

#055768

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #40429b;
/* rgb */ color: rgb(64, 66, 155);
/* oklch */ color: oklch(42.9% 0.142 277.6);

Tailwind

colors: {
  custom: {
    50: '#7e76b9',
    500: '#40429b',
    950: '#000000',
  },
}

SCSS

$custom: #40429b;
$custom-light: #7e76b9;
$custom-dark: #000000;

JSON

{
  "hex": "#40429b",
  "rgb": {
    "r": 64,
    "g": 66,
    "b": 155
  },
  "hsl": {
    "h": 238.681,
    "s": 41.553,
    "l": 42.941
  },
  "oklch": {
    "l": 0.42948,
    "c": 0.14192,
    "h": 277.6
  },
  "luminance": 0.07353
}

Semantic roles & 50–950 ramp

primary

#40429B

secondary

#B8B77E

accent

#CF56D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0811

muted

#7C7B80

Preview Lab

Preview with #40429B

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

Preview Lab → · Contrast checker → · Palette generator →