#403D81#403D81

#403D81 is a dark, moderate blue. Relative luminance 0.060; OKLCH L 40.0% C 0.111 H 282.1°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#403D81
RGB	rgb(64, 61, 129)
HSL	hsl(243, 36%, 37%)
HSV	hsv(243, 53%, 51%)
CMYK	cmyk(50.4%, 52.7%, 0%, 49.4%)
CIE-LAB	lab(29.44, 20.89, -38.14)
CIE-LCH	lch(29.44, 43.49, 298.71°)
OKLab	oklab(40.01% 0.0233 -0.1086)
OKLCH	oklch(40.01% 0.111 282.1)
XYZ	xyz(7.7443, 6.0121, 21.5170)
Luminance	0.0601 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D81 #7E813D

analogous

#3D5C81 #403D81 #623D81

triadic

#403D81 #81403D #3D8140

tetradic

#403D81 #813D5C #7E813D #3D8162

square

#403D81 #813D5C #7E813D #3D8162

split-complementary

#403D81 #81623D #5C813D

monochromatic

#17162E #2B2957 #403D81 #5551AB #7C79C0

Accessibility & contrast

On white

9.54

#403D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#403D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D81

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D81	#FFFFFF	#000000	##FFFFFF
##403D81	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D4883

Deuteranopia (green-blind)

#184380

Tritanopia (blue-blind)

#284C59

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #403d81;
/* rgb */ color: rgb(64, 61, 129);
/* oklch */ color: oklch(40.0% 0.111 282.1);

Tailwind

colors: {
  custom: {
    50: '#7a72a6',
    500: '#403d81',
    950: '#000000',
  },
}

SCSS

$custom: #403d81;
$custom-light: #7a72a6;
$custom-dark: #000000;

JSON

{
  "hex": "#403d81",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 129
  },
  "hsl": {
    "h": 242.647,
    "s": 35.789,
    "l": 37.255
  },
  "oklch": {
    "l": 0.40007,
    "c": 0.11112,
    "h": 282.1
  },
  "luminance": 0.06012
}

Semantic roles & 50–950 ramp

primary

#403D81

secondary

#A7A970

accent

#CC5CC7

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#09080F

muted

#7B7B7F

Preview Lab

Preview with #403D81

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

Preview Lab → · Contrast checker → · Palette generator →