#403E9E#403E9E

#403E9E is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.151 H 278.7°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#403E9E
RGB	rgb(64, 62, 158)
HSL	hsl(241, 44%, 43%)
HSV	hsv(241, 61%, 62%)
CMYK	cmyk(59.5%, 60.8%, 0%, 38%)
CIE-LAB	lab(31.81, 30.00, -52.13)
CIE-LCH	lch(31.81, 60.15, 299.92°)
OKLab	oklab(42.44% 0.0229 -0.1498)
OKLCH	oklch(42.44% 0.152 278.7)
XYZ	xyz(10.0066, 7.0031, 33.1656)
Luminance	0.0700 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.62

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403E9E #9C9E3E

analogous

#3E6C9E #403E9E #703E9E

triadic

#403E9E #9E403E #3E9E40

tetradic

#403E9E #9E3E6C #9C9E3E #3E9E70

square

#403E9E #9E3E6C #9C9E3E #3E9E70

split-complementary

#403E9E #9E703E #6C9E3E

monochromatic

#1C1C46 #2E2D72 #403E9E #5D5BBF #8887D0

Accessibility & contrast

On white

8.75

#403E9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#403E9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403E9E

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403E9E	#FFFFFF	#000000	##FFFFFF
##403E9E	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA1

Deuteranopia (green-blind)

#00479C

Tritanopia (blue-blind)

#005568

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403e9e;
/* rgb */ color: rgb(64, 62, 158);
/* oklch */ color: oklch(42.4% 0.151 278.7);

Tailwind

colors: {
  custom: {
    50: '#7e73bb',
    500: '#403e9e',
    950: '#000000',
  },
}

SCSS

$custom: #403e9e;
$custom-light: #7e73bb;
$custom-dark: #000000;

JSON

{
  "hex": "#403e9e",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 158
  },
  "hsl": {
    "h": 241.25,
    "s": 43.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42441,
    "c": 0.1515,
    "h": 278.7
  },
  "luminance": 0.07004
}

Semantic roles & 50–950 ramp

primary

#403E9E

secondary

#B9BA7E

accent

#D354D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403E9E

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

Preview Lab → · Contrast checker → · Palette generator →