#403DA1#403DA1

#403DA1 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.157 H 278.7°. Best body text is #FFFFFF at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#403DA1
RGB	rgb(64, 61, 161)
HSL	hsl(242, 45%, 44%)
HSV	hsv(242, 62%, 63%)
CMYK	cmyk(60.2%, 62.1%, 0%, 36.9%)
CIE-LAB	lab(31.81, 31.65, -53.95)
CIE-LCH	lch(31.81, 62.55, 300.40°)
OKLab	oklab(42.51% 0.0237 -0.1551)
OKLCH	oklch(42.51% 0.157 278.7)
XYZ	xyz(10.2141, 6.9999, 34.5242)
Luminance	0.0700 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.14

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403DA1 #9EA13D

analogous

#3D6CA1 #403DA1 #723DA1

triadic

#403DA1 #A1403D #3DA140

tetradic

#403DA1 #A13D6C #9EA13D #3DA172

square

#403DA1 #A13D6C #9EA13D #3DA172

split-complementary

#403DA1 #A1723D #6CA13D

monochromatic

#1D1B48 #2E2C75 #403DA1 #5E5BC1 #8987D1

Accessibility & contrast

On white

8.75

#403DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#403DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403DA1

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403DA1	#FFFFFF	#000000	##FFFFFF
##403DA1	1.00	8.75	2.40	8.75
#FFFFFF	8.75	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA4

Deuteranopia (green-blind)

#00479F

Tritanopia (blue-blind)

#005669

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403da1;
/* rgb */ color: rgb(64, 61, 161);
/* oklch */ color: oklch(42.5% 0.157 278.7);

Tailwind

colors: {
  custom: {
    50: '#7f73be',
    500: '#403da1',
    950: '#000000',
  },
}

SCSS

$custom: #403da1;
$custom-light: #7f73be;
$custom-dark: #000000;

JSON

{
  "hex": "#403da1",
  "rgb": {
    "r": 64,
    "g": 61,
    "b": 161
  },
  "hsl": {
    "h": 241.8,
    "s": 45.045,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42511,
    "c": 0.15695,
    "h": 278.7
  },
  "luminance": 0.07001
}

Semantic roles & 50–950 ramp

primary

#403DA1

secondary

#BABC7E

accent

#D553D1

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403DA1

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

Preview Lab → · Contrast checker → · Palette generator →