#403DA5#403DA5

#403DA5 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.162 H 278.3°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#403DA5
RGB	rgb(64, 61, 165)
HSL	hsl(242, 46%, 44%)
HSV	hsv(242, 63%, 65%)
CMYK	cmyk(61.2%, 63%, 0%, 35.3%)
CIE-LAB	lab(32.13, 33.00, -55.84)
CIE-LCH	lch(32.13, 64.86, 300.59°)
OKLab	oklab(42.85% 0.0235 -0.1607)
OKLCH	oklch(42.85% 0.162 278.3)
XYZ	xyz(10.5725, 7.1433, 36.4117)
Luminance	0.0714 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.60

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403DA5 #A2A53D

analogous

#3D6EA5 #403DA5 #743DA5

triadic

#403DA5 #A5403D #3DA540

tetradic

#403DA5 #A53D6E #A2A53D #3DA574

square

#403DA5 #A53D6E #A2A53D #3DA574

split-complementary

#403DA5 #A5743D #6EA53D

monochromatic

#1D1C4C #2F2C78 #403DA5 #5F5CC3 #8B89D3

Accessibility & contrast

On white

8.65

#403DA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#403DA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DA5

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DA5	#FFFFFF	#000000	##FFFFFF
##403DA5	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A8

Deuteranopia (green-blind)

#0047A3

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #403da5;
/* rgb */ color: rgb(64, 61, 165);
/* oklch */ color: oklch(42.9% 0.162 278.3);

Tailwind

colors: {
  custom: {
    50: '#8073c1',
    500: '#403da5',
    950: '#000000',
  },
}

SCSS

$custom: #403da5;
$custom-light: #8073c1;
$custom-dark: #000000;

JSON

{
  "hex": "#403da5",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 165
  },
  "hsl": {
    "h": 241.731,
    "s": 46.018,
    "l": 44.314
  },
  "oklch": {
    "l": 0.4285,
    "c": 0.16238,
    "h": 278.3
  },
  "luminance": 0.07144
}

Semantic roles & 50–950 ramp

primary

#403DA5

secondary

#BCBE80

accent

#D652D2

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403DA5

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

Preview Lab → · Contrast checker → · Palette generator →