#403AB4#403AB4

#403AB4 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.7% C 0.186 H 277.6°. Best body text is #FFFFFF at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#403AB4
RGB	rgb(64, 58, 180)
HSL	hsl(243, 51%, 47%)
HSV	hsv(243, 68%, 71%)
CMYK	cmyk(64.4%, 67.8%, 0%, 29.4%)
CIE-LAB	lab(32.72, 39.86, -63.83)
CIE-LCH	lch(32.72, 75.25, 301.98°)
OKLab	oklab(43.68% 0.0246 -0.1841)
OKLCH	oklch(43.68% 0.186 277.6)
XYZ	xyz(11.8630, 7.4104, 43.9764)
Luminance	0.0741 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Ocean Blue

#4F42B5

ΔE00 2.82

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403AB4 #AEB43A

analogous

#3A71B4 #403AB4 #7D3AB4

triadic

#403AB4 #B4403A #3AB440

tetradic

#403AB4 #B43A71 #AEB43A #3AB47D

square

#403AB4 #B43A71 #AEB43A #3AB47D

split-complementary

#403AB4 #B47D3A #71B43A

monochromatic

#1F1C57 #302B86 #403AB4 #6560CC #928EDB

Accessibility & contrast

On white

8.46

#403AB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#403AB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403AB4

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403AB4	#FFFFFF	#000000	##FFFFFF
##403AB4	1.00	8.46	2.48	8.46
#FFFFFF	8.46	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B8

Deuteranopia (green-blind)

#0048B2

Tritanopia (blue-blind)

#005A72

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403ab4;
/* rgb */ color: rgb(64, 58, 180);
/* oklch */ color: oklch(43.7% 0.186 277.6);

Tailwind

colors: {
  custom: {
    50: '#8371cb',
    500: '#403ab4',
    950: '#000000',
  },
}

SCSS

$custom: #403ab4;
$custom-light: #8371cb;
$custom-dark: #000000;

JSON

{
  "hex": "#403ab4",
  "rgb": {
    "r": 64,
    "g": 58,
    "b": 180
  },
  "hsl": {
    "h": 242.951,
    "s": 51.261,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43678,
    "c": 0.18576,
    "h": 277.6
  },
  "luminance": 0.07411
}

Semantic roles & 50–950 ramp

primary

#403AB4

secondary

#C2C585

accent

#DB4DD4

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403AB4

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

Preview Lab → · Contrast checker → · Palette generator →