#403C8F#403C8F

#403C8F is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.9% C 0.133 H 280.9°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#403C8F
RGB	rgb(64, 60, 143)
HSL	hsl(243, 41%, 40%)
HSV	hsv(243, 58%, 56%)
CMYK	cmyk(55.2%, 58%, 0%, 43.9%)
CIE-LAB	lab(30.17, 26.22, -45.65)
CIE-LCH	lch(30.17, 52.64, 299.88°)
OKLab	oklab(40.86% 0.0252 -0.1307)
OKLCH	oklch(40.86% 0.133 280.9)
XYZ	xyz(8.6866, 6.3043, 26.7404)
Luminance	0.0630 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403C8F #8B8F3C

analogous

#3C618F #403C8F #6A3C8F

triadic

#403C8F #8F403C #3C8F40

tetradic

#403C8F #8F3C61 #8B8F3C #3C8F6A

square

#403C8F #8F3C61 #8B8F3C #3C8F6A

split-complementary

#403C8F #8F6A3C #618F3C

monochromatic

#191839 #2D2A64 #403C8F #5752B6 #817DC8

Accessibility & contrast

On white

9.29

#403C8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#403C8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403C8F

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403C8F	#FFFFFF	#000000	##FFFFFF
##403C8F	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A92

Deuteranopia (green-blind)

#00448D

Tritanopia (blue-blind)

#1C4F5F

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #403c8f;
/* rgb */ color: rgb(64, 60, 143);
/* oklch */ color: oklch(40.9% 0.133 280.9);

Tailwind

colors: {
  custom: {
    50: '#7c72b0',
    500: '#403c8f',
    950: '#000000',
  },
}

SCSS

$custom: #403c8f;
$custom-light: #7c72b0;
$custom-dark: #000000;

JSON

{
  "hex": "#403c8f",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 143
  },
  "hsl": {
    "h": 242.892,
    "s": 40.887,
    "l": 39.804
  },
  "oklch": {
    "l": 0.40863,
    "c": 0.13311,
    "h": 280.9
  },
  "luminance": 0.06305
}

Semantic roles & 50–950 ramp

primary

#403C8F

secondary

#AFB275

accent

#D157CB

background

#F7F6FA

surface

#EEECF5

border

#C9C7CF

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #403C8F

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

Preview Lab → · Contrast checker → · Palette generator →