#403E9F#403E9F

#403E9F is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.153 H 278.6°. Best body text is #FFFFFF at 8.72:1 contrast (WCAG AA passes).

Color values

HEX	#403E9F
RGB	rgb(64, 62, 159)
HSL	hsl(241, 44%, 43%)
HSV	hsv(241, 61%, 62%)
CMYK	cmyk(59.7%, 61%, 0%, 37.6%)
CIE-LAB	lab(31.89, 30.34, -52.61)
CIE-LCH	lch(31.89, 60.73, 299.97°)
OKLab	oklab(42.52% 0.0229 -0.1512)
OKLCH	oklch(42.52% 0.153 278.6)
XYZ	xyz(10.0930, 7.0377, 33.6207)
Luminance	0.0704 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.48

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403E9F #9D9F3E

analogous

#3E6C9F #403E9F #703E9F

triadic

#403E9F #9F403E #3E9F40

tetradic

#403E9F #9F3E6C #9D9F3E #3E9F70

square

#403E9F #9F3E6C #9D9F3E #3E9F70

split-complementary

#403E9F #9F703E #6C9F3E

monochromatic

#1D1C47 #2E2D73 #403E9F #5D5BBF #8987D0

Accessibility & contrast

On white

8.72

#403E9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#403E9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403E9F

8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403E9F	#FFFFFF	#000000	##FFFFFF
##403E9F	1.00	8.72	2.41	8.72
#FFFFFF	8.72	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA2

Deuteranopia (green-blind)

#00479D

Tritanopia (blue-blind)

#005668

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403e9f;
/* rgb */ color: rgb(64, 62, 159);
/* oklch */ color: oklch(42.5% 0.153 278.6);

Tailwind

colors: {
  custom: {
    50: '#7f73bc',
    500: '#403e9f',
    950: '#000000',
  },
}

SCSS

$custom: #403e9f;
$custom-light: #7f73bc;
$custom-dark: #000000;

JSON

{
  "hex": "#403e9f",
  "rgb": {
    "r": 64,
    "g": 62,
    "b": 159
  },
  "hsl": {
    "h": 241.237,
    "s": 43.891,
    "l": 43.333
  },
  "oklch": {
    "l": 0.42524,
    "c": 0.15289,
    "h": 278.6
  },
  "luminance": 0.07038
}

Semantic roles & 50–950 ramp

primary

#403E9F

secondary

#B9BB7E

accent

#D454D1

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403E9F

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

Preview Lab → · Contrast checker → · Palette generator →