#403FAA#403FAA

#403FAA is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.167 H 277.4°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#403FAA
RGB	rgb(64, 63, 170)
HSL	hsl(241, 46%, 46%)
HSV	hsv(241, 63%, 67%)
CMYK	cmyk(62.4%, 62.9%, 0%, 33.3%)
CIE-LAB	lab(33.02, 33.44, -57.39)
CIE-LCH	lch(33.02, 66.42, 300.23°)
OKLab	oklab(43.63% 0.0214 -0.1652)
OKLCH	oklch(43.63% 0.167 277.4)
XYZ	xyz(11.1452, 7.5464, 38.8917)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403FAA #A9AA3F

analogous

#3F73AA #403FAA #753FAA

triadic

#403FAA #AA403F #3FAA40

tetradic

#403FAA #AA3F73 #A9AA3F #3FAA75

square

#403FAA #AA3F73 #A9AA3F #3FAA75

split-complementary

#403FAA #AA753F #73AA3F

monochromatic

#1E1E51 #2F2E7D #403FAA #6262C5 #8F8ED5

Accessibility & contrast

On white

8.37

#403FAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#403FAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FAA

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FAA	#FFFFFF	#000000	##FFFFFF
##403FAA	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AD

Deuteranopia (green-blind)

#0049A8

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403faa;
/* rgb */ color: rgb(64, 63, 170);
/* oklch */ color: oklch(43.6% 0.167 277.4);

Tailwind

colors: {
  custom: {
    50: '#8174c4',
    500: '#403faa',
    950: '#000000',
  },
}

SCSS

$custom: #403faa;
$custom-light: #8174c4;
$custom-dark: #000000;

JSON

{
  "hex": "#403faa",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 170
  },
  "hsl": {
    "h": 240.561,
    "s": 45.923,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43629,
    "c": 0.16659,
    "h": 277.4
  },
  "luminance": 0.07547
}

Semantic roles & 50–950 ramp

primary

#403FAA

secondary

#C0C085

accent

#D652D4

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403FAA

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

Preview Lab → · Contrast checker → · Palette generator →