#403C8B#403C8B

#403C8B is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.6% C 0.127 H 281.4°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#403C8B
RGB	rgb(64, 60, 139)
HSL	hsl(243, 40%, 39%)
HSV	hsv(243, 57%, 55%)
CMYK	cmyk(54%, 56.8%, 0%, 45.5%)
CIE-LAB	lab(29.88, 24.88, -43.65)
CIE-LCH	lch(29.88, 50.25, 299.68°)
OKLab	oklab(40.55% 0.0251 -0.1248)
OKLCH	oklch(40.55% 0.127 281.4)
XYZ	xyz(8.3890, 6.1853, 25.1729)
Luminance	0.0619 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#403C8B #878B3C

analogous

#3C608B #403C8B #683C8B

triadic

#403C8B #8B403C #3C8B40

tetradic

#403C8B #8B3C60 #878B3C #3C8B68

square

#403C8B #8B3C60 #878B3C #3C8B68

split-complementary

#403C8B #8B683C #608B3C

monochromatic

#191736 #2C2A60 #403C8B #5651B4 #7F7BC6

Accessibility & contrast

On white

9.39

#403C8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#403C8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #403C8B

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##403C8B	#FFFFFF	#000000	##FFFFFF
##403C8B	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#08498E

Deuteranopia (green-blind)

#004489

Tritanopia (blue-blind)

#204E5D

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #403c8b;
/* rgb */ color: rgb(64, 60, 139);
/* oklch */ color: oklch(40.6% 0.127 281.4);

Tailwind

colors: {
  custom: {
    50: '#7b72ad',
    500: '#403c8b',
    950: '#000000',
  },
}

SCSS

$custom: #403c8b;
$custom-light: #7b72ad;
$custom-dark: #000000;

JSON

{
  "hex": "#403c8b",
  "rgb": {
    "r": 64,
    "g": 60,
    "b": 139
  },
  "hsl": {
    "h": 243.038,
    "s": 39.698,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40553,
    "c": 0.12735,
    "h": 281.4
  },
  "luminance": 0.06186
}

Semantic roles & 50–950 ramp

primary

#403C8B

secondary

#ADB073

accent

#D058CA

background

#F7F6FA

surface

#EEECF4

border

#C9C7CE

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #403C8B

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

Preview Lab → · Contrast checker → · Palette generator →