#403F8A#403F8A

#403F8A is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.1% C 0.122 H 280.2°. Best body text is #FFFFFF at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#403F8A
RGB	rgb(64, 63, 138)
HSL	hsl(241, 37%, 39%)
HSV	hsv(241, 54%, 54%)
CMYK	cmyk(53.6%, 54.3%, 0%, 45.9%)
CIE-LAB	lab(30.59, 22.58, -41.88)
CIE-LCH	lch(30.59, 47.58, 298.33°)
OKLab	oklab(41.06% 0.0215 -0.1196)
OKLCH	oklch(41.06% 0.122 280.2)
XYZ	xyz(8.4779, 6.4795, 24.8438)
Luminance	0.0648 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F8A #898A3F

analogous

#3F648A #403F8A #663F8A

triadic

#403F8A #8A403F #3F8A40

tetradic

#403F8A #8A3F64 #898A3F #3F8A66

square

#403F8A #8A3F64 #898A3F #3F8A66

split-complementary

#403F8A #8A663F #648A3F

monochromatic

#191936 #2D2C60 #403F8A #5655B1 #807FC5

Accessibility & contrast

On white

9.15

#403F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#403F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F8A

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F8A	#FFFFFF	#000000	##FFFFFF
##403F8A	1.00	9.15	2.30	9.15
#FFFFFF	9.15	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164B8D

Deuteranopia (green-blind)

#0C4588

Tritanopia (blue-blind)

#21505E

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #403f8a;
/* rgb */ color: rgb(64, 63, 138);
/* oklch */ color: oklch(41.1% 0.122 280.2);

Tailwind

colors: {
  custom: {
    50: '#7b74ad',
    500: '#403f8a',
    950: '#000000',
  },
}

SCSS

$custom: #403f8a;
$custom-light: #7b74ad;
$custom-dark: #000000;

JSON

{
  "hex": "#403f8a",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 138
  },
  "hsl": {
    "h": 240.8,
    "s": 37.313,
    "l": 39.412
  },
  "oklch": {
    "l": 0.41064,
    "c": 0.12154,
    "h": 280.2
  },
  "luminance": 0.0648
}

Semantic roles & 50–950 ramp

primary

#403F8A

secondary

#AEAF76

accent

#CD5BCC

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #403F8A

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

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