#40439D#40439D

#40439D is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.3% C 0.143 H 277.1°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#40439D
RGB	rgb(64, 67, 157)
HSL	hsl(238, 42%, 43%)
HSV	hsv(238, 59%, 62%)
CMYK	cmyk(59.2%, 57.3%, 0%, 38.4%)
CIE-LAB	lab(33.00, 26.44, -49.60)
CIE-LCH	lch(33.00, 56.20, 298.06°)
OKLab	oklab(43.3% 0.0178 -0.1423)
OKLCH	oklch(43.3% 0.143 277.1)
XYZ	xyz(10.2054, 7.5379, 32.8089)
Luminance	0.0754 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40439D #9D9A40

analogous

#40719D #40439D #6B409D

triadic

#40439D #9D4043 #439D40

tetradic

#40439D #9D4071 #9D9A40 #409D6B

square

#40439D #9D4071 #9D9A40 #409D6B

split-complementary

#40439D #9D6B40 #719D40

monochromatic

#1D1E46 #2E3072 #40439D #5D60BD #898BCF

Accessibility & contrast

On white

8.37

#40439D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#40439D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40439D

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40439D	#FFFFFF	#000000	##FFFFFF
##40439D	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A0

Deuteranopia (green-blind)

#004A9B

Tritanopia (blue-blind)

#005869

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #40439d;
/* rgb */ color: rgb(64, 67, 157);
/* oklch */ color: oklch(43.3% 0.143 277.1);

Tailwind

colors: {
  custom: {
    50: '#7e77bb',
    500: '#40439d',
    950: '#000000',
  },
}

SCSS

$custom: #40439d;
$custom-light: #7e77bb;
$custom-dark: #000000;

JSON

{
  "hex": "#40439d",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 157
  },
  "hsl": {
    "h": 238.065,
    "s": 42.081,
    "l": 43.333
  },
  "oklch": {
    "l": 0.43296,
    "c": 0.14339,
    "h": 277.1
  },
  "luminance": 0.07539
}

Semantic roles & 50–950 ramp

primary

#40439D

secondary

#B9B87F

accent

#CE56D2

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #40439D

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

Preview Lab → · Contrast checker → · Palette generator →