#403DA3#403DA3

#403DA3 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.7% C 0.160 H 278.5°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#403DA3
RGB	rgb(64, 61, 163)
HSL	hsl(242, 46%, 44%)
HSV	hsv(242, 63%, 64%)
CMYK	cmyk(60.7%, 62.6%, 0%, 36.1%)
CIE-LAB	lab(31.97, 32.33, -54.90)
CIE-LCH	lch(31.97, 63.71, 300.49°)
OKLab	oklab(42.68% 0.0236 -0.1579)
OKLCH	oklch(42.68% 0.16 278.5)
XYZ	xyz(10.3918, 7.0711, 35.4605)
Luminance	0.0707 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.86

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403DA3 #A0A33D

analogous

#3D6DA3 #403DA3 #733DA3

triadic

#403DA3 #A3403D #3DA340

tetradic

#403DA3 #A33D6D #A0A33D #3DA373

square

#403DA3 #A33D6D #A0A33D #3DA373

split-complementary

#403DA3 #A3733D #6DA33D

monochromatic

#1D1C4A #2F2C76 #403DA3 #5E5BC2 #8A88D2

Accessibility & contrast

On white

8.70

#403DA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#403DA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DA3

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DA3	#FFFFFF	#000000	##FFFFFF
##403DA3	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA6

Deuteranopia (green-blind)

#0047A1

Tritanopia (blue-blind)

#00566A

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403da3;
/* rgb */ color: rgb(64, 61, 163);
/* oklch */ color: oklch(42.7% 0.160 278.5);

Tailwind

colors: {
  custom: {
    50: '#7f73bf',
    500: '#403da3',
    950: '#000000',
  },
}

SCSS

$custom: #403da3;
$custom-light: #7f73bf;
$custom-dark: #000000;

JSON

{
  "hex": "#403da3",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 163
  },
  "hsl": {
    "h": 241.765,
    "s": 45.536,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42679,
    "c": 0.15967,
    "h": 278.5
  },
  "luminance": 0.07072
}

Semantic roles & 50–950 ramp

primary

#403DA3

secondary

#BBBD7F

accent

#D553D1

background

#F8F7FB

surface

#EFEDF7

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403DA3

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

Preview Lab → · Contrast checker → · Palette generator →