#403BB3#403BB3

#403BB3 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.7% C 0.183 H 277.5°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#403BB3
RGB	rgb(64, 59, 179)
HSL	hsl(243, 50%, 47%)
HSV	hsv(243, 67%, 70%)
CMYK	cmyk(64.2%, 67%, 0%, 29.8%)
CIE-LAB	lab(32.86, 38.93, -63.02)
CIE-LCH	lch(32.86, 74.07, 301.70°)
OKLab	oklab(43.75% 0.0239 -0.1817)
OKLCH	oklch(43.75% 0.183 277.5)
XYZ	xyz(11.8124, 7.4716, 43.4588)
Luminance	0.0747 (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

#403BB3 #AEB33B

analogous

#3B72B3 #403BB3 #7C3BB3

triadic

#403BB3 #B3403B #3BB340

tetradic

#403BB3 #B33B72 #AEB33B #3BB37C

square

#403BB3 #B33B72 #AEB33B #3BB37C

split-complementary

#403BB3 #B37C3B #72B33B

monochromatic

#1F1D57 #302C85 #403BB3 #6560CB #928EDA

Accessibility & contrast

On white

8.42

#403BB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#403BB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BB3

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BB3	#FFFFFF	#000000	##FFFFFF
##403BB3	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B7

Deuteranopia (green-blind)

#0048B1

Tritanopia (blue-blind)

#005A72

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403bb3;
/* rgb */ color: rgb(64, 59, 179);
/* oklch */ color: oklch(43.7% 0.183 277.5);

Tailwind

colors: {
  custom: {
    50: '#8372cb',
    500: '#403bb3',
    950: '#000000',
  },
}

SCSS

$custom: #403bb3;
$custom-light: #8372cb;
$custom-dark: #000000;

JSON

{
  "hex": "#403bb3",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 179
  },
  "hsl": {
    "h": 242.5,
    "s": 50.42,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43747,
    "c": 0.18331,
    "h": 277.5
  },
  "luminance": 0.07473
}

Semantic roles & 50–950 ramp

primary

#403BB3

secondary

#C2C585

accent

#DA4ED4

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403BB3

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

Preview Lab → · Contrast checker → · Palette generator →