#40478E#40478E

#40478E is a dark, moderate blue. Relative luminance 0.075; OKLCH L 43.0% C 0.116 H 276.1°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#40478E
RGB	rgb(64, 71, 142)
HSL	hsl(235, 38%, 40%)
HSV	hsv(235, 55%, 56%)
CMYK	cmyk(54.9%, 50%, 0%, 44.3%)
CIE-LAB	lab(33.03, 18.66, -40.43)
CIE-LCH	lch(33.03, 44.53, 294.77°)
OKLab	oklab(42.98% 0.0124 -0.1153)
OKLCH	oklch(42.98% 0.116 276.1)
XYZ	xyz(9.2485, 7.5489, 26.5557)
Luminance	0.0755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40478E #8E8740

analogous

#406E8E #40478E #60408E

triadic

#40478E #8E4047 #478E40

tetradic

#40478E #8E406E #8E8740 #408E60

square

#40478E #8E406E #8E8740 #408E60

split-complementary

#40478E #8E6040 #6E8E40

monochromatic

#1A1D3A #2D3264 #40478E #5860B4 #8288C7

Accessibility & contrast

On white

8.37

#40478E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#40478E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #40478E

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40478E	#FFFFFF	#000000	##FFFFFF
##40478E	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)

#255191

Deuteranopia (green-blind)

#1C4B8C

Tritanopia (blue-blind)

#1B5763

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #40478e;
/* rgb */ color: rgb(64, 71, 142);
/* oklch */ color: oklch(43.0% 0.116 276.1);

Tailwind

colors: {
  custom: {
    50: '#7b7aaf',
    500: '#40478e',
    950: '#000000',
  },
}

SCSS

$custom: #40478e;
$custom-light: #7b7aaf;
$custom-dark: #000000;

JSON

{
  "hex": "#40478e",
  "rgb": {
    "r": 64,
    "g": 71,
    "b": 142
  },
  "hsl": {
    "h": 234.615,
    "s": 37.864,
    "l": 40.392
  },
  "oklch": {
    "l": 0.42981,
    "c": 0.11594,
    "h": 276.1
  },
  "luminance": 0.07549
}

Semantic roles & 50–950 ramp

primary

#40478E

secondary

#B1AC79

accent

#C35ACE

background

#F7F7FA

surface

#EEEDF5

border

#C9C8CF

text

#0A0910

muted

#7C7B7F

Preview Lab

Preview with #40478E

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

Preview Lab → · Contrast checker → · Palette generator →