#40318C#40318C

#40318C is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.6% C 0.144 H 285.0°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#40318C
RGB	rgb(64, 49, 140)
HSL	hsl(250, 48%, 37%)
HSV	hsv(250, 65%, 55%)
CMYK	cmyk(54.3%, 65%, 0%, 45.1%)
CIE-LAB	lab(27.24, 32.24, -48.54)
CIE-LCH	lch(27.24, 58.27, 303.59°)
OKLab	oklab(38.64% 0.0372 -0.1393)
OKLCH	oklch(38.64% 0.144 285)
XYZ	xyz(7.9449, 5.1796, 25.3870)
Luminance	0.0518 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40318C #7D8C31

analogous

#31508C #40318C #6E318C

triadic

#40318C #8C4031 #318C40

tetradic

#40318C #8C3150 #7D8C31 #318C6E

square

#40318C #8C3150 #7D8C31 #318C6E

split-complementary

#40318C #8C6E31 #508C31

monochromatic

#171131 #2B215F #40318C #5541B9 #7C6CCC

Accessibility & contrast

On white

10.31

#40318C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#40318C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40318C

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40318C	#FFFFFF	#000000	##FFFFFF
##40318C	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438F

Deuteranopia (green-blind)

#003E8A

Tritanopia (blue-blind)

#21475A

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #40318c;
/* rgb */ color: rgb(64, 49, 140);
/* oklch */ color: oklch(38.6% 0.144 285.0);

Tailwind

colors: {
  custom: {
    50: '#7c6aae',
    500: '#40318c',
    950: '#000000',
  },
}

SCSS

$custom: #40318c;
$custom-light: #7c6aae;
$custom-dark: #000000;

JSON

{
  "hex": "#40318c",
  "rgb": {
    "r": 64,
    "g": 49,
    "b": 140
  },
  "hsl": {
    "h": 249.89,
    "s": 48.148,
    "l": 37.059
  },
  "oklch": {
    "l": 0.38638,
    "c": 0.14417,
    "h": 285
  },
  "luminance": 0.0518
}

Semantic roles & 50–950 ramp

primary

#40318C

secondary

#A6B366

accent

#D850C1

background

#F7F6FA

surface

#EEEBF4

border

#C9C6CE

text

#0A0610

muted

#7C7A7F

Preview Lab

Preview with #40318C

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

Preview Lab → · Contrast checker → · Palette generator →