#40319B#40319B

#40319B is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.0% C 0.164 H 282.5°. Best body text is #FFFFFF at 9.86:1 contrast (WCAG AA passes).

Color values

HEX	#40319B
RGB	rgb(64, 49, 155)
HSL	hsl(248, 52%, 40%)
HSV	hsv(248, 68%, 61%)
CMYK	cmyk(58.7%, 68.4%, 0%, 39.2%)
CIE-LAB	lab(28.52, 37.08, -55.68)
CIE-LCH	lch(28.52, 66.89, 303.66°)
OKLab	oklab(39.96% 0.0354 -0.1602)
OKLCH	oklch(39.96% 0.164 282.5)
XYZ	xyz(9.1272, 5.6526, 31.6141)
Luminance	0.0565 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40319B #8C9B31

analogous

#31579B #40319B #75319B

triadic

#40319B #9B4031 #319B40

tetradic

#40319B #9B3157 #8C9B31 #319B75

square

#40319B #9B3157 #8C9B31 #319B75

split-complementary

#40319B #9B7531 #579B31

monochromatic

#1A143E #2D226D #40319B #5745C4 #8173D3

Accessibility & contrast

On white

9.86

#40319B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.13

#40319B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40319B

9.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40319B	#FFFFFF	#000000	##FFFFFF
##40319B	1.00	9.86	2.13	9.86
#FFFFFF	9.86	1.00	21.00	1.00
#000000	2.13	21.00	1.00	21.00
##FFFFFF	9.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479E

Deuteranopia (green-blind)

#004099

Tritanopia (blue-blind)

#0B4C62

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #40319b;
/* rgb */ color: rgb(64, 49, 155);
/* oklch */ color: oklch(40.0% 0.164 282.5);

Tailwind

colors: {
  custom: {
    50: '#7f6ab9',
    500: '#40319b',
    950: '#000000',
  },
}

SCSS

$custom: #40319b;
$custom-light: #7f6ab9;
$custom-dark: #000000;

JSON

{
  "hex": "#40319b",
  "rgb": {
    "r": 64,
    "g": 49,
    "b": 155
  },
  "hsl": {
    "h": 248.491,
    "s": 51.961,
    "l": 40
  },
  "oklch": {
    "l": 0.39961,
    "c": 0.16411,
    "h": 282.5
  },
  "luminance": 0.05653
}

Semantic roles & 50–950 ramp

primary

#40319B

secondary

#B0BB6D

accent

#DB4CC7

background

#F8F6FB

surface

#EFEBF6

border

#CAC6D0

text

#0B0612

muted

#7C7A81

Preview Lab

Preview with #40319B

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

Preview Lab → · Contrast checker → · Palette generator →