#040315#040315

#040315 is a very dark, muted blue. Relative luminance 0.001; OKLCH L 11.7% C 0.044 H 281.3°. Best body text is #FFFFFF at 20.41:1 contrast (WCAG AA passes).

Color values

HEX	#040315
RGB	rgb(4, 3, 21)
HSL	hsl(243, 75%, 5%)
HSV	hsv(243, 86%, 8%)
CMYK	cmyk(81%, 85.7%, 0%, 91.8%)
CIE-LAB	lab(1.31, 3.28, -8.12)
CIE-LCH	lch(1.31, 8.76, 291.97°)
OKLab	oklab(11.71% 0.0086 -0.0431)
OKLCH	oklch(11.71% 0.044 281.3)
XYZ	xyz(0.2179, 0.1451, 0.7258)
Luminance	0.0014 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040315 #141503

analogous

#030B15 #040315 #0D0315

triadic

#040315 #150403 #031504

tetradic

#040315 #15030B #141503 #03150D

square

#040315 #15030B #141503 #03150D

split-complementary

#040315 #150D03 #0B1503

monochromatic

#05041B #05041B #05041B #0E0B4B #181280

Accessibility & contrast

On white

20.41

#040315 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#040315 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040315

20.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040315	#FFFFFF	#000000	##FFFFFF
##040315	1.00	20.41	1.03	20.41
#FFFFFF	20.41	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000516

Deuteranopia (green-blind)

#000415

Tritanopia (blue-blind)

#00060A

Achromatopsia (no color)

#050505

Design tokens & code

CSS

--color: #040315;
/* rgb */ color: rgb(4, 3, 21);
/* oklch */ color: oklch(11.7% 0.044 281.3);

Tailwind

colors: {
  custom: {
    50: '#484852',
    500: '#040315',
    950: '#000000',
  },
}

SCSS

$custom: #040315;
$custom-light: #484852;
$custom-dark: #000000;

JSON

{
  "hex": "#040315",
  "rgb": {
    "r": 4,
    "g": 3,
    "b": 21
  },
  "hsl": {
    "h": 243.333,
    "s": 75,
    "l": 4.706
  },
  "oklch": {
    "l": 0.11709,
    "c": 0.04396,
    "h": 281.3
  },
  "luminance": 0.00145
}

Semantic roles & 50–950 ramp

primary

#040315

secondary

#55581C

accent

#F236E7

background

#F4F4F4

surface

#E6E6E7

border

#C2C2C3

text

#000002

muted

#777778

Preview Lab

Preview with #040315

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

Preview Lab → · Contrast checker → · Palette generator →