#43378D#43378D

#43378D is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.0% C 0.137 H 284.7°. Best body text is #FFFFFF at 9.68:1 contrast (WCAG AA passes).

Color values

HEX	#43378D
RGB	rgb(67, 55, 141)
HSL	hsl(248, 44%, 38%)
HSV	hsv(248, 61%, 55%)
CMYK	cmyk(52.5%, 61%, 0%, 44.7%)
CIE-LAB	lab(29.03, 29.40, -46.25)
CIE-LCH	lch(29.03, 54.81, 302.45°)
OKLab	oklab(40.04% 0.0348 -0.1324)
OKLCH	oklch(40.04% 0.137 284.7)
XYZ	xyz(8.4872, 5.8483, 25.8758)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#43378D #818D37

analogous

#37568D #43378D #6E378D

triadic

#43378D #8D4337 #378D43

tetradic

#43378D #8D3756 #818D37 #378D6E

square

#43378D #8D3756 #818D37 #378D6E

split-complementary

#43378D #8D6E37 #568D37

monochromatic

#191535 #2E2661 #43378D #5949B8 #8175C9

Accessibility & contrast

On white

9.68

#43378D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#43378D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #43378D

9.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##43378D	#FFFFFF	#000000	##FFFFFF
##43378D	1.00	9.68	2.17	9.68
#FFFFFF	9.68	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004790

Deuteranopia (green-blind)

#00428B

Tritanopia (blue-blind)

#274B5C

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #43378d;
/* rgb */ color: rgb(67, 55, 141);
/* oklch */ color: oklch(40.0% 0.137 284.7);

Tailwind

colors: {
  custom: {
    50: '#7e6eaf',
    500: '#43378d',
    950: '#000000',
  },
}

SCSS

$custom: #43378d;
$custom-light: #7e6eaf;
$custom-dark: #000000;

JSON

{
  "hex": "#43378d",
  "rgb": {
    "r": 67,
    "g": 55,
    "b": 141
  },
  "hsl": {
    "h": 248.372,
    "s": 43.878,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40037,
    "c": 0.13692,
    "h": 284.7
  },
  "luminance": 0.05849
}

Semantic roles & 50–950 ramp

primary

#43378D

secondary

#A9B26E

accent

#D454C2

background

#F8F6FA

surface

#EFECF5

border

#CAC7CF

text

#0A0710

muted

#7C7A7F

Preview Lab

Preview with #43378D

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

Preview Lab → · Contrast checker → · Palette generator →