#403FAD#403FAD

#403FAD is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.9% C 0.171 H 277.1°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#403FAD
RGB	rgb(64, 63, 173)
HSL	hsl(241, 47%, 46%)
HSV	hsv(241, 64%, 68%)
CMYK	cmyk(63%, 63.6%, 0%, 32.2%)
CIE-LAB	lab(33.27, 34.45, -58.78)
CIE-LCH	lch(33.27, 68.13, 300.38°)
OKLab	oklab(43.89% 0.0212 -0.1693)
OKLCH	oklch(43.89% 0.171 277.1)
XYZ	xyz(11.4322, 7.6612, 40.4034)
Luminance	0.0766 (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

#403FAD #ACAD3F

analogous

#3F75AD #403FAD #773FAD

triadic

#403FAD #AD403F #3FAD40

tetradic

#403FAD #AD3F75 #ACAD3F #3FAD77

square

#403FAD #AD3F75 #ACAD3F #3FAD77

split-complementary

#403FAD #AD773F #75AD3F

monochromatic

#1F1E53 #2F2F80 #403FAD #6463C6 #9190D7

Accessibility & contrast

On white

8.29

#403FAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#403FAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403FAD

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403FAD	#FFFFFF	#000000	##FFFFFF
##403FAD	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B1

Deuteranopia (green-blind)

#004AAB

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #403fad;
/* rgb */ color: rgb(64, 63, 173);
/* oklch */ color: oklch(43.9% 0.171 277.1);

Tailwind

colors: {
  custom: {
    50: '#8174c6',
    500: '#403fad',
    950: '#000000',
  },
}

SCSS

$custom: #403fad;
$custom-light: #8174c6;
$custom-dark: #000000;

JSON

{
  "hex": "#403fad",
  "rgb": {
    "r": 64,
    "g": 63,
    "b": 173
  },
  "hsl": {
    "h": 240.545,
    "s": 46.61,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43887,
    "c": 0.17061,
    "h": 277.1
  },
  "luminance": 0.07662
}

Semantic roles & 50–950 ramp

primary

#403FAD

secondary

#C1C286

accent

#D652D5

background

#F8F7FC

surface

#F0EDF8

border

#CBC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403FAD

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

Preview Lab → · Contrast checker → · Palette generator →