#403D8E#403D8E

#403D8E is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.0% C 0.130 H 280.6°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#403D8E
RGB	rgb(64, 61, 142)
HSL	hsl(242, 40%, 40%)
HSV	hsv(242, 57%, 56%)
CMYK	cmyk(54.9%, 57%, 0%, 44.3%)
CIE-LAB	lab(30.35, 25.24, -44.74)
CIE-LCH	lch(30.35, 51.36, 299.43°)
OKLab	oklab(40.98% 0.024 -0.128)
OKLCH	oklch(40.98% 0.13 280.6)
XYZ	xyz(8.6641, 6.3799, 26.3609)
Luminance	0.0638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D8E #8B8E3D

analogous

#3D638E #403D8E #683D8E

triadic

#403D8E #8E403D #3D8E40

tetradic

#403D8E #8E3D63 #8B8E3D #3D8E68

square

#403D8E #8E3D63 #8B8E3D #3D8E68

split-complementary

#403D8E #8E683D #638E3D

monochromatic

#191838 #2D2B63 #403D8E #5753B5 #817EC8

Accessibility & contrast

On white

9.23

#403D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#403D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D8E

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D8E	#FFFFFF	#000000	##FFFFFF
##403D8E	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#054A91

Deuteranopia (green-blind)

#00448C

Tritanopia (blue-blind)

#1D505F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #403d8e;
/* rgb */ color: rgb(64, 61, 142);
/* oklch */ color: oklch(41.0% 0.130 280.6);

Tailwind

colors: {
  custom: {
    50: '#7c72b0',
    500: '#403d8e',
    950: '#000000',
  },
}

SCSS

$custom: #403d8e;
$custom-light: #7c72b0;
$custom-dark: #000000;

JSON

{
  "hex": "#403d8e",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 142
  },
  "hsl": {
    "h": 242.222,
    "s": 39.901,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40976,
    "c": 0.13026,
    "h": 280.6
  },
  "luminance": 0.0638
}

Semantic roles & 50–950 ramp

primary

#403D8E

secondary

#AFB175

accent

#D058CB

background

#F7F6FA

surface

#EEECF5

border

#C9C7CF

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #403D8E

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

Preview Lab → · Contrast checker → · Palette generator →