#403D8A#403D8A

#403D8A is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.7% C 0.124 H 281.1°. Best body text is #FFFFFF at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#403D8A
RGB	rgb(64, 61, 138)
HSL	hsl(242, 39%, 39%)
HSV	hsv(242, 56%, 54%)
CMYK	cmyk(53.6%, 55.8%, 0%, 45.9%)
CIE-LAB	lab(30.06, 23.89, -42.73)
CIE-LCH	lch(30.06, 48.96, 299.21°)
OKLab	oklab(40.67% 0.0239 -0.1221)
OKLCH	oklch(40.67% 0.124 281.1)
XYZ	xyz(8.3691, 6.2620, 24.8075)
Luminance	0.0626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D8A #878A3D

analogous

#3D618A #403D8A #673D8A

triadic

#403D8A #8A403D #3D8A40

tetradic

#403D8A #8A3D61 #878A3D #3D8A67

square

#403D8A #8A3D61 #878A3D #3D8A67

split-complementary

#403D8A #8A673D #618A3D

monochromatic

#191735 #2C2A60 #403D8A #5652B2 #7F7CC5

Accessibility & contrast

On white

9.32

#403D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#403D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D8A

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D8A	#FFFFFF	#000000	##FFFFFF
##403D8A	1.00	9.32	2.25	9.32
#FFFFFF	9.32	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F4A8D

Deuteranopia (green-blind)

#034488

Tritanopia (blue-blind)

#214E5D

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #403d8a;
/* rgb */ color: rgb(64, 61, 138);
/* oklch */ color: oklch(40.7% 0.124 281.1);

Tailwind

colors: {
  custom: {
    50: '#7b72ad',
    500: '#403d8a',
    950: '#000000',
  },
}

SCSS

$custom: #403d8a;
$custom-light: #7b72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#403d8a",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 138
  },
  "hsl": {
    "h": 242.338,
    "s": 38.693,
    "l": 39.02
  },
  "oklch": {
    "l": 0.4067,
    "c": 0.12445,
    "h": 281.1
  },
  "luminance": 0.06262
}

Semantic roles & 50–950 ramp

primary

#403D8A

secondary

#ADAF74

accent

#CF59CA

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0810

muted

#7C7B7F

Preview Lab

Preview with #403D8A

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

Preview Lab → · Contrast checker → · Palette generator →