#403E9C#403E9C

#403E9C is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.3% C 0.149 H 278.9°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#403E9C
RGB	rgb(64, 62, 156)
HSL	hsl(241, 43%, 43%)
HSV	hsv(241, 60%, 61%)
CMYK	cmyk(59%, 60.3%, 0%, 38.8%)
CIE-LAB	lab(31.66, 29.32, -51.17)
CIE-LCH	lch(31.66, 58.98, 299.81°)
OKLab	oklab(42.28% 0.0229 -0.1469)
OKLCH	oklch(42.28% 0.149 278.9)
XYZ	xyz(9.8358, 6.9349, 32.2663)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.91

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403E9C #9A9C3E

analogous

#3E6B9C #403E9C #6F3E9C

triadic

#403E9C #9C403E #3E9C40

tetradic

#403E9C #9C3E6B #9A9C3E #3E9C6F

square

#403E9C #9C3E6B #9A9C3E #3E9C6F

split-complementary

#403E9C #9C6F3E #6B9C3E

monochromatic

#1C1B44 #2E2D70 #403E9C #5C5ABD #8786CF

Accessibility & contrast

On white

8.80

#403E9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#403E9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403E9C

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403E9C	#FFFFFF	#000000	##FFFFFF
##403E9C	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004E9F

Deuteranopia (green-blind)

#00479A

Tritanopia (blue-blind)

#045567

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #403e9c;
/* rgb */ color: rgb(64, 62, 156);
/* oklch */ color: oklch(42.3% 0.149 278.9);

Tailwind

colors: {
  custom: {
    50: '#7e73ba',
    500: '#403e9c',
    950: '#000000',
  },
}

SCSS

$custom: #403e9c;
$custom-light: #7e73ba;
$custom-dark: #000000;

JSON

{
  "hex": "#403e9c",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 156
  },
  "hsl": {
    "h": 241.277,
    "s": 43.119,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42277,
    "c": 0.14873,
    "h": 278.9
  },
  "luminance": 0.06936
}

Semantic roles & 50–950 ramp

primary

#403E9C

secondary

#B8B97D

accent

#D355D0

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403E9C

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

Preview Lab → · Contrast checker → · Palette generator →