#403FAB#403FAB

#403FAB is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.7% C 0.168 H 277.3°. Best body text is #FFFFFF at 8.34:1 contrast (WCAG AA passes).

Color values

HEX	#403FAB
RGB	rgb(64, 63, 171)
HSL	hsl(241, 46%, 46%)
HSV	hsv(241, 63%, 67%)
CMYK	cmyk(62.6%, 63.2%, 0%, 32.9%)
CIE-LAB	lab(33.10, 33.78, -57.85)
CIE-LCH	lch(33.10, 66.99, 300.28°)
OKLab	oklab(43.71% 0.0213 -0.1666)
OKLCH	oklch(43.71% 0.168 277.3)
XYZ	xyz(11.2402, 7.5844, 39.3918)
Luminance	0.0759 (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

#403FAB #AAAB3F

analogous

#3F74AB #403FAB #763FAB

triadic

#403FAB #AB403F #3FAB40

tetradic

#403FAB #AB3F74 #AAAB3F #3FAB76

square

#403FAB #AB3F74 #AAAB3F #3FAB76

split-complementary

#403FAB #AB763F #74AB3F

monochromatic

#1F1E52 #2F2F7E #403FAB #6362C5 #8F8FD6

Accessibility & contrast

On white

8.34

#403FAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#403FAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FAB

8.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FAB	#FFFFFF	#000000	##FFFFFF
##403FAB	1.00	8.34	2.52	8.34
#FFFFFF	8.34	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AE

Deuteranopia (green-blind)

#0049A9

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403fab;
/* rgb */ color: rgb(64, 63, 171);
/* oklch */ color: oklch(43.7% 0.168 277.3);

Tailwind

colors: {
  custom: {
    50: '#8174c5',
    500: '#403fab',
    950: '#000000',
  },
}

SCSS

$custom: #403fab;
$custom-light: #8174c5;
$custom-dark: #000000;

JSON

{
  "hex": "#403fab",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 171
  },
  "hsl": {
    "h": 240.556,
    "s": 46.154,
    "l": 45.882
  },
  "oklch": {
    "l": 0.43714,
    "c": 0.16793,
    "h": 277.3
  },
  "luminance": 0.07585
}

Semantic roles & 50–950 ramp

primary

#403FAB

secondary

#C0C185

accent

#D652D5

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403FAB

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

Preview Lab → · Contrast checker → · Palette generator →