#403C9B#403C9B

#403C9B is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.150 H 279.6°. Best body text is #FFFFFF at 8.98:1 contrast (WCAG AA passes).

Color values

HEX	#403C9B
RGB	rgb(64, 60, 155)
HSL	hsl(243, 44%, 42%)
HSV	hsv(243, 61%, 61%)
CMYK	cmyk(58.7%, 61.3%, 0%, 39.2%)
CIE-LAB	lab(31.08, 30.26, -51.49)
CIE-LCH	lch(31.08, 59.73, 300.44°)
OKLab	oklab(41.83% 0.025 -0.1479)
OKLCH	oklch(41.83% 0.15 279.6)
XYZ	xyz(9.6447, 6.6876, 31.7866)
Luminance	0.0669 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.93

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403C9B #979B3C

analogous

#3C689B #403C9B #6F3C9B

triadic

#403C9B #9B403C #3C9B40

tetradic

#403C9B #9B3C68 #979B3C #3C9B6F

square

#403C9B #9B3C68 #979B3C #3C9B6F

split-complementary

#403C9B #9B6F3C #689B3C

monochromatic

#1C1A43 #2E2B6F #403C9B #5B56BE #8683CF

Accessibility & contrast

On white

8.98

#403C9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#403C9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403C9B

8.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403C9B	#FFFFFF	#000000	##FFFFFF
##403C9B	1.00	8.98	2.34	8.98
#FFFFFF	8.98	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9E

Deuteranopia (green-blind)

#004599

Tritanopia (blue-blind)

#085365

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #403c9b;
/* rgb */ color: rgb(64, 60, 155);
/* oklch */ color: oklch(41.8% 0.150 279.6);

Tailwind

colors: {
  custom: {
    50: '#7e72b9',
    500: '#403c9b',
    950: '#000000',
  },
}

SCSS

$custom: #403c9b;
$custom-light: #7e72b9;
$custom-dark: #000000;

JSON

{
  "hex": "#403c9b",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 155
  },
  "hsl": {
    "h": 242.526,
    "s": 44.186,
    "l": 42.157
  },
  "oklch": {
    "l": 0.4183,
    "c": 0.15,
    "h": 279.6
  },
  "luminance": 0.06688
}

Semantic roles & 50–950 ramp

primary

#403C9B

secondary

#B6B97A

accent

#D454CF

background

#F8F6FB

surface

#EFECF6

border

#CAC7D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #403C9B

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

Preview Lab → · Contrast checker → · Palette generator →