#403C8A#403C8A

#403C8A is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.5% C 0.126 H 281.5°. Best body text is #FFFFFF at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#403C8A
RGB	rgb(64, 60, 138)
HSL	hsl(243, 39%, 39%)
HSV	hsv(243, 57%, 54%)
CMYK	cmyk(53.6%, 56.5%, 0%, 45.9%)
CIE-LAB	lab(29.80, 24.54, -43.15)
CIE-LCH	lch(29.80, 49.65, 299.63°)
OKLab	oklab(40.48% 0.0251 -0.1234)
OKLCH	oklch(40.48% 0.126 281.5)
XYZ	xyz(8.3162, 6.1562, 24.7899)
Luminance	0.0616 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403C8A #868A3C

analogous

#3C5F8A #403C8A #673C8A

triadic

#403C8A #8A403C #3C8A40

tetradic

#403C8A #8A3C5F #868A3C #3C8A67

square

#403C8A #8A3C5F #868A3C #3C8A67

split-complementary

#403C8A #8A673C #5F8A3C

monochromatic

#181735 #2C295F #403C8A #5550B3 #7F7BC6

Accessibility & contrast

On white

9.41

#403C8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#403C8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403C8A

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403C8A	#FFFFFF	#000000	##FFFFFF
##403C8A	1.00	9.41	2.23	9.41
#FFFFFF	9.41	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B498D

Deuteranopia (green-blind)

#004388

Tritanopia (blue-blind)

#214E5D

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #403c8a;
/* rgb */ color: rgb(64, 60, 138);
/* oklch */ color: oklch(40.5% 0.126 281.5);

Tailwind

colors: {
  custom: {
    50: '#7b72ad',
    500: '#403c8a',
    950: '#000000',
  },
}

SCSS

$custom: #403c8a;
$custom-light: #7b72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#403c8a",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 138
  },
  "hsl": {
    "h": 243.077,
    "s": 39.394,
    "l": 38.824
  },
  "oklch": {
    "l": 0.40476,
    "c": 0.1259,
    "h": 281.5
  },
  "luminance": 0.06157
}

Semantic roles & 50–950 ramp

primary

#403C8A

secondary

#ACAF73

accent

#CF59C9

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #403C8A

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

Preview Lab → · Contrast checker → · Palette generator →