#403EAB#403EAB

#403EAB is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.5% C 0.169 H 277.5°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#403EAB
RGB	rgb(64, 62, 171)
HSL	hsl(241, 47%, 46%)
HSV	hsv(241, 64%, 67%)
CMYK	cmyk(62.6%, 63.7%, 0%, 32.9%)
CIE-LAB	lab(32.86, 34.40, -58.24)
CIE-LCH	lch(32.86, 67.64, 300.57°)
OKLab	oklab(43.54% 0.0222 -0.1677)
OKLCH	oklch(43.54% 0.169 277.5)
XYZ	xyz(11.1853, 7.4746, 39.3735)
Luminance	0.0748 (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

#403EAB #A9AB3E

analogous

#3E72AB #403EAB #763EAB

triadic

#403EAB #AB403E #3EAB40

tetradic

#403EAB #AB3E72 #A9AB3E #3EAB76

square

#403EAB #AB3E72 #A9AB3E #3EAB76

split-complementary

#403EAB #AB763E #72AB3E

monochromatic

#1E1D51 #2F2E7E #403EAB #6261C6 #8F8ED6

Accessibility & contrast

On white

8.42

#403EAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#403EAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403EAB

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403EAB	#FFFFFF	#000000	##FFFFFF
##403EAB	1.00	8.42	2.50	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AE

Deuteranopia (green-blind)

#0049A9

Tritanopia (blue-blind)

#00596E

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403eab;
/* rgb */ color: rgb(64, 62, 171);
/* oklch */ color: oklch(43.5% 0.169 277.5);

Tailwind

colors: {
  custom: {
    50: '#8173c5',
    500: '#403eab',
    950: '#000000',
  },
}

SCSS

$custom: #403eab;
$custom-light: #8173c5;
$custom-dark: #000000;

JSON

{
  "hex": "#403eab",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 171
  },
  "hsl": {
    "h": 241.101,
    "s": 46.781,
    "l": 45.686
  },
  "oklch": {
    "l": 0.4354,
    "c": 0.16918,
    "h": 277.5
  },
  "luminance": 0.07476
}

Semantic roles & 50–950 ramp

primary

#403EAB

secondary

#C0C184

accent

#D651D4

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403EAB

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

Preview Lab → · Contrast checker → · Palette generator →