#403DA9#403DA9

#403DA9 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.2% C 0.168 H 278.0°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#403DA9
RGB	rgb(64, 61, 169)
HSL	hsl(242, 47%, 45%)
HSV	hsv(242, 64%, 66%)
CMYK	cmyk(62.1%, 63.9%, 0%, 33.7%)
CIE-LAB	lab(32.46, 34.35, -57.70)
CIE-LCH	lch(32.46, 67.15, 300.77°)
OKLab	oklab(43.19% 0.0232 -0.1661)
OKLCH	oklch(43.19% 0.168 278)
XYZ	xyz(10.9422, 7.2912, 38.3591)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403DA9 #A6A93D

analogous

#3D70A9 #403DA9 #763DA9

triadic

#403DA9 #A9403D #3DA940

tetradic

#403DA9 #A93D70 #A6A93D #3DA976

square

#403DA9 #A93D70 #A6A93D #3DA976

split-complementary

#403DA9 #A9763D #70A93D

monochromatic

#1E1D4F #2F2D7C #403DA9 #615EC5 #8D8BD5

Accessibility & contrast

On white

8.54

#403DA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#403DA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DA9

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DA9	#FFFFFF	#000000	##FFFFFF
##403DA9	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AC

Deuteranopia (green-blind)

#0048A7

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403da9;
/* rgb */ color: rgb(64, 61, 169);
/* oklch */ color: oklch(43.2% 0.168 278.0);

Tailwind

colors: {
  custom: {
    50: '#8073c3',
    500: '#403da9',
    950: '#000000',
  },
}

SCSS

$custom: #403da9;
$custom-light: #8073c3;
$custom-dark: #000000;

JSON

{
  "hex": "#403da9",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 169
  },
  "hsl": {
    "h": 241.667,
    "s": 46.957,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43194,
    "c": 0.16776,
    "h": 278
  },
  "luminance": 0.07292
}

Semantic roles & 50–950 ramp

primary

#403DA9

secondary

#BEC082

accent

#D751D3

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403DA9

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

Preview Lab → · Contrast checker → · Palette generator →