#403F8D#403F8D

#403F8D is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.3% C 0.126 H 279.9°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#403F8D
RGB	rgb(64, 63, 141)
HSL	hsl(241, 38%, 40%)
HSV	hsv(241, 55%, 55%)
CMYK	cmyk(54.6%, 55.3%, 0%, 44.7%)
CIE-LAB	lab(30.80, 23.59, -43.39)
CIE-LCH	lch(30.80, 49.39, 298.53°)
OKLab	oklab(41.29% 0.0217 -0.1241)
OKLCH	oklch(41.29% 0.126 279.9)
XYZ	xyz(8.6981, 6.5676, 26.0035)
Luminance	0.0657 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F8D #8C8D3F

analogous

#3F658D #403F8D #673F8D

triadic

#403F8D #8D403F #3F8D40

tetradic

#403F8D #8D3F65 #8C8D3F #3F8D67

square

#403F8D #8D3F65 #8C8D3F #3F8D67

split-complementary

#403F8D #8D673F #658D3F

monochromatic

#1A1938 #2D2C63 #403F8D #5756B3 #8180C6

Accessibility & contrast

On white

9.08

#403F8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#403F8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F8D

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F8D	#FFFFFF	#000000	##FFFFFF
##403F8D	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#114C90

Deuteranopia (green-blind)

#03468B

Tritanopia (blue-blind)

#1E515F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #403f8d;
/* rgb */ color: rgb(64, 63, 141);
/* oklch */ color: oklch(41.3% 0.126 279.9);

Tailwind

colors: {
  custom: {
    50: '#7b74af',
    500: '#403f8d',
    950: '#000000',
  },
}

SCSS

$custom: #403f8d;
$custom-light: #7b74af;
$custom-dark: #000000;

JSON

{
  "hex": "#403f8d",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 141
  },
  "hsl": {
    "h": 240.769,
    "s": 38.235,
    "l": 40
  },
  "oklch": {
    "l": 0.41289,
    "c": 0.12594,
    "h": 279.9
  },
  "luminance": 0.06568
}

Semantic roles & 50–950 ramp

primary

#403F8D

secondary

#B0B177

accent

#CE5ACD

background

#F7F7FA

surface

#EEEDF4

border

#C9C8CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #403F8D

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

Preview Lab → · Contrast checker → · Palette generator →