#403C99#403C99

#403C99 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.7% C 0.147 H 279.8°. Best body text is #FFFFFF at 9.03:1 contrast (WCAG AA passes).

Color values

HEX	#403C99
RGB	rgb(64, 60, 153)
HSL	hsl(243, 44%, 42%)
HSV	hsv(243, 61%, 60%)
CMYK	cmyk(58.2%, 60.8%, 0%, 40%)
CIE-LAB	lab(30.93, 29.59, -50.53)
CIE-LCH	lch(30.93, 58.56, 300.35°)
OKLab	oklab(41.67% 0.0251 -0.1451)
OKLCH	oklch(41.67% 0.147 279.8)
XYZ	xyz(9.4782, 6.6210, 30.9093)
Luminance	0.0662 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.22

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403C99 #95993C

analogous

#3C6799 #403C99 #6F3C99

triadic

#403C99 #99403C #3C9940

tetradic

#403C99 #993C67 #95993C #3C996F

square

#403C99 #993C67 #95993C #3C996F

split-complementary

#403C99 #996F3C #67993C

monochromatic

#1B1A41 #2E2B6D #403C99 #5A56BD #8582CE

Accessibility & contrast

On white

9.03

#403C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#403C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403C99

9.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403C99	#FFFFFF	#000000	##FFFFFF
##403C99	1.00	9.03	2.32	9.03
#FFFFFF	9.03	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004C9C

Deuteranopia (green-blind)

#004597

Tritanopia (blue-blind)

#0D5264

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #403c99;
/* rgb */ color: rgb(64, 60, 153);
/* oklch */ color: oklch(41.7% 0.147 279.8);

Tailwind

colors: {
  custom: {
    50: '#7e72b8',
    500: '#403c99',
    950: '#000000',
  },
}

SCSS

$custom: #403c99;
$custom-light: #7e72b8;
$custom-dark: #000000;

JSON

{
  "hex": "#403c99",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 153
  },
  "hsl": {
    "h": 242.581,
    "s": 43.662,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41665,
    "c": 0.14723,
    "h": 279.8
  },
  "luminance": 0.06622
}

Semantic roles & 50–950 ramp

primary

#403C99

secondary

#B5B879

accent

#D354CE

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0811

muted

#7C7B80

Preview Lab

Preview with #403C99

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

Preview Lab → · Contrast checker → · Palette generator →