#403BA4#403BA4

#403BA4 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.4% C 0.164 H 278.9°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#403BA4
RGB	rgb(64, 59, 164)
HSL	hsl(243, 47%, 44%)
HSV	hsv(243, 64%, 64%)
CMYK	cmyk(61%, 64%, 0%, 35.7%)
CIE-LAB	lab(31.57, 33.92, -56.15)
CIE-LCH	lch(31.57, 65.60, 301.14°)
OKLab	oklab(42.42% 0.0254 -0.1616)
OKLCH	oklch(42.42% 0.164 278.9)
XYZ	xyz(10.3770, 6.8975, 35.8993)
Luminance	0.0690 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403BA4 #9FA43B

analogous

#3B6AA4 #403BA4 #743BA4

triadic

#403BA4 #A4403B #3BA440

tetradic

#403BA4 #A43B6A #9FA43B #3BA474

square

#403BA4 #A43B6A #9FA43B #3BA474

split-complementary

#403BA4 #A4743B #6AA43B

monochromatic

#1D1B4A #2E2B77 #403BA4 #5E59C3 #8A86D3

Accessibility & contrast

On white

8.83

#403BA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#403BA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BA4

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BA4	#FFFFFF	#000000	##FFFFFF
##403BA4	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA7

Deuteranopia (green-blind)

#0046A2

Tritanopia (blue-blind)

#00556A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #403ba4;
/* rgb */ color: rgb(64, 59, 164);
/* oklch */ color: oklch(42.4% 0.164 278.9);

Tailwind

colors: {
  custom: {
    50: '#8071c0',
    500: '#403ba4',
    950: '#000000',
  },
}

SCSS

$custom: #403ba4;
$custom-light: #8071c0;
$custom-dark: #000000;

JSON

{
  "hex": "#403ba4",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 164
  },
  "hsl": {
    "h": 242.857,
    "s": 47.085,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42415,
    "c": 0.16356,
    "h": 278.9
  },
  "luminance": 0.06898
}

Semantic roles & 50–950 ramp

primary

#403BA4

secondary

#BBBE7D

accent

#D751D0

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403BA4

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

Preview Lab → · Contrast checker → · Palette generator →