#403DA4#403DA4

#403DA4 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.161 H 278.4°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#403DA4
RGB	rgb(64, 61, 164)
HSL	hsl(242, 46%, 44%)
HSV	hsv(242, 63%, 64%)
CMYK	cmyk(61%, 62.8%, 0%, 35.7%)
CIE-LAB	lab(32.05, 32.67, -55.37)
CIE-LCH	lch(32.05, 64.29, 300.54°)
OKLab	oklab(42.76% 0.0236 -0.1593)
OKLCH	oklch(42.76% 0.161 278.4)
XYZ	xyz(10.4818, 7.1070, 35.9342)
Luminance	0.0711 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.73

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403DA4 #A1A43D

analogous

#3D6EA4 #403DA4 #743DA4

triadic

#403DA4 #A4403D #3DA440

tetradic

#403DA4 #A43D6E #A1A43D #3DA474

square

#403DA4 #A43D6E #A1A43D #3DA474

split-complementary

#403DA4 #A4743D #6EA43D

monochromatic

#1D1C4B #2F2C77 #403DA4 #5F5CC2 #8B88D3

Accessibility & contrast

On white

8.67

#403DA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#403DA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DA4

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DA4	#FFFFFF	#000000	##FFFFFF
##403DA4	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A7

Deuteranopia (green-blind)

#0047A2

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403da4;
/* rgb */ color: rgb(64, 61, 164);
/* oklch */ color: oklch(42.8% 0.161 278.4);

Tailwind

colors: {
  custom: {
    50: '#8073c0',
    500: '#403da4',
    950: '#000000',
  },
}

SCSS

$custom: #403da4;
$custom-light: #8073c0;
$custom-dark: #000000;

JSON

{
  "hex": "#403da4",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 164
  },
  "hsl": {
    "h": 241.748,
    "s": 45.778,
    "l": 44.118
  },
  "oklch": {
    "l": 0.42764,
    "c": 0.16102,
    "h": 278.4
  },
  "luminance": 0.07108
}

Semantic roles & 50–950 ramp

primary

#403DA4

secondary

#BCBD7F

accent

#D552D2

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403DA4

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

Preview Lab → · Contrast checker → · Palette generator →