#40439E#40439E

#40439E is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.4% C 0.145 H 277.1°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#40439E
RGB	rgb(64, 67, 158)
HSL	hsl(238, 42%, 44%)
HSV	hsv(238, 59%, 62%)
CMYK	cmyk(59.5%, 57.6%, 0%, 38%)
CIE-LAB	lab(33.08, 26.78, -50.08)
CIE-LCH	lch(33.08, 56.79, 298.13°)
OKLab	oklab(43.38% 0.0179 -0.1437)
OKLCH	oklch(43.38% 0.145 277.1)
XYZ	xyz(10.2911, 7.5722, 33.2604)
Luminance	0.0757 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40439E #9E9B40

analogous

#40729E #40439E #6C409E

triadic

#40439E #9E4043 #439E40

tetradic

#40439E #9E4072 #9E9B40 #409E6C

square

#40439E #9E4072 #9E9B40 #409E6C

split-complementary

#40439E #9E6C40 #729E40

monochromatic

#1D1E47 #2E3172 #40439E #5E61BE #898BCF

Accessibility & contrast

On white

8.35

#40439E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#40439E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40439E

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40439E	#FFFFFF	#000000	##FFFFFF
##40439E	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A1

Deuteranopia (green-blind)

#004A9C

Tritanopia (blue-blind)

#00586A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #40439e;
/* rgb */ color: rgb(64, 67, 158);
/* oklch */ color: oklch(43.4% 0.145 277.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#40439e",
  "rgb": {
    "r": 64,
    "g": 67,
    "b": 158
  },
  "hsl": {
    "h": 238.085,
    "s": 42.342,
    "l": 43.529
  },
  "oklch": {
    "l": 0.43375,
    "c": 0.1448,
    "h": 277.1
  },
  "luminance": 0.07573
}

Semantic roles & 50–950 ramp

primary

#40439E

secondary

#BAB880

accent

#CE56D2

background

#F8F7FB

surface

#EFEDF6

border

#CAC8D0

text

#0B0812

muted

#7C7B81

Preview Lab

Preview with #40439E

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

Preview Lab → · Contrast checker → · Palette generator →