#403E8A#403E8A

#403E8A is a dark, vivid blue. Relative luminance 0.064; OKLCH L 40.9% C 0.123 H 280.6°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#403E8A
RGB	rgb(64, 62, 138)
HSL	hsl(242, 38%, 39%)
HSV	hsv(242, 55%, 54%)
CMYK	cmyk(53.6%, 55.1%, 0%, 45.9%)
CIE-LAB	lab(30.33, 23.23, -42.31)
CIE-LCH	lch(30.33, 48.27, 298.77°)
OKLab	oklab(40.87% 0.0227 -0.1209)
OKLCH	oklch(40.87% 0.123 280.6)
XYZ	xyz(8.4230, 6.3697, 24.8255)
Luminance	0.0637 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403E8A #888A3E

analogous

#3E628A #403E8A #663E8A

triadic

#403E8A #8A403E #3E8A40

tetradic

#403E8A #8A3E62 #888A3E #3E8A66

square

#403E8A #8A3E62 #888A3E #3E8A66

split-complementary

#403E8A #8A663E #628A3E

monochromatic

#191836 #2C2B60 #403E8A #5653B2 #7F7EC5

Accessibility & contrast

On white

9.23

#403E8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#403E8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403E8A

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403E8A	#FFFFFF	#000000	##FFFFFF
##403E8A	1.00	9.23	2.27	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134A8D

Deuteranopia (green-blind)

#084588

Tritanopia (blue-blind)

#214F5E

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #403e8a;
/* rgb */ color: rgb(64, 62, 138);
/* oklch */ color: oklch(40.9% 0.123 280.6);

Tailwind

colors: {
  custom: {
    50: '#7b73ad',
    500: '#403e8a',
    950: '#000000',
  },
}

SCSS

$custom: #403e8a;
$custom-light: #7b73ad;
$custom-dark: #000000;

JSON

{
  "hex": "#403e8a",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 138
  },
  "hsl": {
    "h": 241.579,
    "s": 38,
    "l": 39.216
  },
  "oklch": {
    "l": 0.40866,
    "c": 0.123,
    "h": 280.6
  },
  "luminance": 0.0637
}

Semantic roles & 50–950 ramp

primary

#403E8A

secondary

#ADAF75

accent

#CE5ACB

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #403E8A

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

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