#403BA9#403BA9

#403BA9 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.170 H 278.4°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#403BA9
RGB	rgb(64, 59, 169)
HSL	hsl(243, 48%, 45%)
HSV	hsv(243, 65%, 66%)
CMYK	cmyk(62.1%, 65.1%, 0%, 33.7%)
CIE-LAB	lab(31.99, 35.59, -58.47)
CIE-LCH	lch(31.99, 68.45, 301.33°)
OKLab	oklab(42.85% 0.025 -0.1684)
OKLCH	oklch(42.85% 0.17 278.4)
XYZ	xyz(10.8375, 7.0817, 38.3242)
Luminance	0.0708 (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

#403BA9 #A4A93B

analogous

#3B6DA9 #403BA9 #773BA9

triadic

#403BA9 #A9403B #3BA940

tetradic

#403BA9 #A93B6D #A4A93B #3BA977

square

#403BA9 #A93B6D #A4A93B #3BA977

split-complementary

#403BA9 #A9773B #6DA93B

monochromatic

#1E1B4E #2F2B7C #403BA9 #605BC6 #8C89D6

Accessibility & contrast

On white

8.69

#403BA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#403BA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403BA9

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403BA9	#FFFFFF	#000000	##FFFFFF
##403BA9	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AC

Deuteranopia (green-blind)

#0047A7

Tritanopia (blue-blind)

#00576C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #403ba9;
/* rgb */ color: rgb(64, 59, 169);
/* oklch */ color: oklch(42.9% 0.170 278.4);

Tailwind

colors: {
  custom: {
    50: '#8171c3',
    500: '#403ba9',
    950: '#000000',
  },
}

SCSS

$custom: #403ba9;
$custom-light: #8171c3;
$custom-dark: #000000;

JSON

{
  "hex": "#403ba9",
  "rgb": {
    "r": 64,
    "g": 59,
    "b": 169
  },
  "hsl": {
    "h": 242.727,
    "s": 48.246,
    "l": 44.706
  },
  "oklch": {
    "l": 0.42852,
    "c": 0.17023,
    "h": 278.4
  },
  "luminance": 0.07082
}

Semantic roles & 50–950 ramp

primary

#403BA9

secondary

#BDC080

accent

#D850D2

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #403BA9

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

Preview Lab → · Contrast checker → · Palette generator →