#40319C#40319C

#40319C is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.1% C 0.165 H 282.3°. Best body text is #FFFFFF at 9.83:1 contrast (WCAG AA passes).

Color values

HEX	#40319C
RGB	rgb(64, 49, 156)
HSL	hsl(248, 52%, 40%)
HSV	hsv(248, 69%, 61%)
CMYK	cmyk(59%, 68.6%, 0%, 38.8%)
CIE-LAB	lab(28.61, 37.40, -56.14)
CIE-LCH	lch(28.61, 67.46, 303.67°)
OKLab	oklab(40.05% 0.0353 -0.1616)
OKLCH	oklch(40.05% 0.165 282.3)
XYZ	xyz(9.2116, 5.6863, 32.0582)
Luminance	0.0569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 7.02

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40319C #8D9C31

analogous

#31589C #40319C #75319C

triadic

#40319C #9C4031 #319C40

tetradic

#40319C #9C3158 #8D9C31 #319C75

square

#40319C #9C3158 #8D9C31 #319C75

split-complementary

#40319C #9C7531 #589C31

monochromatic

#1A143F #2D226D #40319C #5745C5 #8174D3

Accessibility & contrast

On white

9.83

#40319C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#40319C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40319C

9.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40319C	#FFFFFF	#000000	##FFFFFF
##40319C	1.00	9.83	2.14	9.83
#FFFFFF	9.83	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479F

Deuteranopia (green-blind)

#00409A

Tritanopia (blue-blind)

#084D62

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #40319c;
/* rgb */ color: rgb(64, 49, 156);
/* oklch */ color: oklch(40.1% 0.165 282.3);

Tailwind

colors: {
  custom: {
    50: '#7f6aba',
    500: '#40319c',
    950: '#000000',
  },
}

SCSS

$custom: #40319c;
$custom-light: #7f6aba;
$custom-dark: #000000;

JSON

{
  "hex": "#40319c",
  "rgb": {
    "r": 64,
    "g": 49,
    "b": 156
  },
  "hsl": {
    "h": 248.411,
    "s": 52.195,
    "l": 40.196
  },
  "oklch": {
    "l": 0.40052,
    "c": 0.16541,
    "h": 282.3
  },
  "luminance": 0.05687
}

Semantic roles & 50–950 ramp

primary

#40319C

secondary

#B0BB6D

accent

#DC4CC8

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #40319C

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

Preview Lab → · Contrast checker → · Palette generator →