#403F91#403F91

#403F91 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.6% C 0.132 H 279.6°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#403F91
RGB	rgb(64, 63, 145)
HSL	hsl(241, 39%, 41%)
HSV	hsv(241, 57%, 57%)
CMYK	cmyk(55.9%, 56.6%, 0%, 43.1%)
CIE-LAB	lab(31.09, 24.94, -45.39)
CIE-LCH	lch(31.09, 51.79, 298.79°)
OKLab	oklab(41.59% 0.0219 -0.1299)
OKLCH	oklch(41.59% 0.132 279.6)
XYZ	xyz(9.0011, 6.6888, 27.5993)
Luminance	0.0669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403F91 #90913F

analogous

#3F6791 #403F91 #693F91

triadic

#403F91 #91403F #3F9140

tetradic

#403F91 #913F67 #90913F #3F9169

square

#403F91 #913F67 #90913F #3F9169

split-complementary

#403F91 #91693F #67913F

monochromatic

#1A1A3C #2D2C66 #403F91 #5857B6 #8382C9

Accessibility & contrast

On white

8.98

#403F91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#403F91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403F91

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403F91	#FFFFFF	#000000	##FFFFFF
##403F91	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#074C94

Deuteranopia (green-blind)

#00468F

Tritanopia (blue-blind)

#195261

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #403f91;
/* rgb */ color: rgb(64, 63, 145);
/* oklch */ color: oklch(41.6% 0.132 279.6);

Tailwind

colors: {
  custom: {
    50: '#7c74b2',
    500: '#403f91',
    950: '#000000',
  },
}

SCSS

$custom: #403f91;
$custom-light: #7c74b2;
$custom-dark: #000000;

JSON

{
  "hex": "#403f91",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 145
  },
  "hsl": {
    "h": 240.732,
    "s": 39.423,
    "l": 40.784
  },
  "oklch": {
    "l": 0.41593,
    "c": 0.13176,
    "h": 279.6
  },
  "luminance": 0.06689
}

Semantic roles & 50–950 ramp

primary

#403F91

secondary

#B2B379

accent

#CF58CE

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #403F91

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

Preview Lab → · Contrast checker → · Palette generator →