#403CAD#403CAD

#403CAD is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.4% C 0.174 H 277.8°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#403CAD
RGB	rgb(64, 60, 173)
HSL	hsl(242, 48%, 46%)
HSV	hsv(242, 65%, 68%)
CMYK	cmyk(63%, 65.3%, 0%, 32.2%)
CIE-LAB	lab(32.56, 36.32, -59.92)
CIE-LCH	lch(32.56, 70.07, 301.22°)
OKLab	oklab(43.37% 0.0238 -0.1727)
OKLCH	oklch(43.37% 0.174 277.8)
XYZ	xyz(11.2706, 7.3379, 40.3495)
Luminance	0.0734 (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

#403CAD #A9AD3C

analogous

#3C70AD #403CAD #783CAD

triadic

#403CAD #AD403C #3CAD40

tetradic

#403CAD #AD3C70 #A9AD3C #3CAD78

square

#403CAD #AD3C70 #A9AD3C #3CAD78

split-complementary

#403CAD #AD783C #70AD3C

monochromatic

#1E1C52 #2F2C80 #403CAD #625FC7 #8F8CD7

Accessibility & contrast

On white

8.51

#403CAD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#403CAD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403CAD

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403CAD	#FFFFFF	#000000	##FFFFFF
##403CAD	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B1

Deuteranopia (green-blind)

#0048AB

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #403cad;
/* rgb */ color: rgb(64, 60, 173);
/* oklch */ color: oklch(43.4% 0.174 277.8);

Tailwind

colors: {
  custom: {
    50: '#8172c6',
    500: '#403cad',
    950: '#000000',
  },
}

SCSS

$custom: #403cad;
$custom-light: #8172c6;
$custom-dark: #000000;

JSON

{
  "hex": "#403cad",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 173
  },
  "hsl": {
    "h": 242.124,
    "s": 48.498,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43374,
    "c": 0.1743,
    "h": 277.8
  },
  "luminance": 0.07339
}

Semantic roles & 50–950 ramp

primary

#403CAD

secondary

#C0C283

accent

#D850D3

background

#F8F6FC

surface

#F0ECF8

border

#CBC7D1

text

#0C0813

muted

#7D7B82

Preview Lab

Preview with #403CAD

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

Preview Lab → · Contrast checker → · Palette generator →