#403F9F#403F9F

#403F9F is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.7% C 0.152 H 278.3°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#403F9F
RGB	rgb(64, 63, 159)
HSL	hsl(241, 43%, 44%)
HSV	hsv(241, 60%, 62%)
CMYK	cmyk(59.7%, 60.4%, 0%, 37.6%)
CIE-LAB	lab(32.14, 29.70, -52.20)
CIE-LCH	lch(32.14, 60.06, 299.64°)
OKLab	oklab(42.71% 0.0219 -0.15)
OKLCH	oklch(42.71% 0.152 278.3)
XYZ	xyz(10.1479, 7.1475, 33.6390)
Luminance	0.0715 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.56

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F9F #9E9F3F

analogous

#3F6E9F #403F9F #703F9F

triadic

#403F9F #9F403F #3F9F40

tetradic

#403F9F #9F3F6E #9E9F3F #3F9F70

square

#403F9F #9F3F6E #9E9F3F #3F9F70

split-complementary

#403F9F #9F703F #6E9F3F

monochromatic

#1D1C47 #2E2E73 #403F9F #5E5DBF #8988D0

Accessibility & contrast

On white

8.64

#403F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#403F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F9F

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F9F	#FFFFFF	#000000	##FFFFFF
##403F9F	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A2

Deuteranopia (green-blind)

#00489D

Tritanopia (blue-blind)

#005669

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403f9f;
/* rgb */ color: rgb(64, 63, 159);
/* oklch */ color: oklch(42.7% 0.152 278.3);

Tailwind

colors: {
  custom: {
    50: '#7e74bc',
    500: '#403f9f',
    950: '#000000',
  },
}

SCSS

$custom: #403f9f;
$custom-light: #7e74bc;
$custom-dark: #000000;

JSON

{
  "hex": "#403f9f",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 159
  },
  "hsl": {
    "h": 240.625,
    "s": 43.243,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42706,
    "c": 0.15157,
    "h": 278.3
  },
  "luminance": 0.07148
}

Semantic roles & 50–950 ramp

primary

#403F9F

secondary

#BABB7F

accent

#D355D2

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403F9F

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

Preview Lab → · Contrast checker → · Palette generator →