#403BAB#403BAB

#403BAB is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.173 H 278.2°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#403BAB
RGB	rgb(64, 59, 171)
HSL	hsl(243, 49%, 45%)
HSV	hsv(243, 65%, 67%)
CMYK	cmyk(62.6%, 65.5%, 0%, 32.9%)
CIE-LAB	lab(32.16, 36.26, -59.39)
CIE-LCH	lch(32.16, 69.58, 301.41°)
OKLab	oklab(43.03% 0.0248 -0.1711)
OKLCH	oklch(43.03% 0.173 278.2)
XYZ	xyz(11.0266, 7.1573, 39.3206)
Luminance	0.0716 (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

#403BAB #A6AB3B

analogous

#3B6EAB #403BAB #783BAB

triadic

#403BAB #AB403B #3BAB40

tetradic

#403BAB #AB3B6E #A6AB3B #3BAB78

square

#403BAB #AB3B6E #A6AB3B #3BAB78

split-complementary

#403BAB #AB783B #6EAB3B

monochromatic

#1E1C50 #2F2B7D #403BAB #615CC7 #8D8AD7

Accessibility & contrast

On white

8.64

#403BAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#403BAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BAB

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BAB	#FFFFFF	#000000	##FFFFFF
##403BAB	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)

#0050AF

Deuteranopia (green-blind)

#0047A9

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403bab;
/* rgb */ color: rgb(64, 59, 171);
/* oklch */ color: oklch(43.0% 0.173 278.2);

Tailwind

colors: {
  custom: {
    50: '#8171c5',
    500: '#403bab',
    950: '#000000',
  },
}

SCSS

$custom: #403bab;
$custom-light: #8171c5;
$custom-dark: #000000;

JSON

{
  "hex": "#403bab",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 171
  },
  "hsl": {
    "h": 242.679,
    "s": 48.696,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43029,
    "c": 0.17288,
    "h": 278.2
  },
  "luminance": 0.07158
}

Semantic roles & 50–950 ramp

primary

#403BAB

secondary

#BEC181

accent

#D850D2

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403BAB

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

Preview Lab → · Contrast checker → · Palette generator →