#403D9C#403D9C

#403D9C is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.1% C 0.150 H 279.2°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#403D9C
RGB	rgb(64, 61, 156)
HSL	hsl(242, 44%, 43%)
HSV	hsv(242, 61%, 61%)
CMYK	cmyk(59%, 60.9%, 0%, 38.8%)
CIE-LAB	lab(31.41, 29.96, -51.57)
CIE-LCH	lch(31.41, 59.64, 300.15°)
OKLab	oklab(42.09% 0.024 -0.1481)
OKLCH	oklch(42.09% 0.15 279.2)
XYZ	xyz(9.7819, 6.8271, 32.2483)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.84

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403D9C #999C3D

analogous

#3D699C #403D9C #703D9C

triadic

#403D9C #9C403D #3D9C40

tetradic

#403D9C #9C3D69 #999C3D #3D9C70

square

#403D9C #9C3D69 #999C3D #3D9C70

split-complementary

#403D9C #9C703D #699C3D

monochromatic

#1C1B44 #2E2C70 #403D9C #5C58BE #8784CF

Accessibility & contrast

On white

8.88

#403D9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#403D9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403D9C

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403D9C	#FFFFFF	#000000	##FFFFFF
##403D9C	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9F

Deuteranopia (green-blind)

#00469A

Tritanopia (blue-blind)

#045466

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #403d9c;
/* rgb */ color: rgb(64, 61, 156);
/* oklch */ color: oklch(42.1% 0.150 279.2);

Tailwind

colors: {
  custom: {
    50: '#7e73ba',
    500: '#403d9c',
    950: '#000000',
  },
}

SCSS

$custom: #403d9c;
$custom-light: #7e73ba;
$custom-dark: #000000;

JSON

{
  "hex": "#403d9c",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 156
  },
  "hsl": {
    "h": 241.895,
    "s": 43.779,
    "l": 42.549
  },
  "oklch": {
    "l": 0.42094,
    "c": 0.15006,
    "h": 279.2
  },
  "luminance": 0.06828
}

Semantic roles & 50–950 ramp

primary

#403D9C

secondary

#B7B97C

accent

#D454D0

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403D9C

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

Preview Lab → · Contrast checker → · Palette generator →