#040531#040531

#040531 is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 16.1% C 0.085 H 270.3°. Best body text is #FFFFFF at 19.60:1 contrast (WCAG AA passes).

Color values

HEX	#040531
RGB	rgb(4, 5, 49)
HSL	hsl(239, 85%, 10%)
HSV	hsv(239, 92%, 19%)
CMYK	cmyk(91.8%, 89.8%, 0%, 80.8%)
CIE-LAB	lab(3.22, 13.11, -26.86)
CIE-LCH	lch(3.22, 29.89, 296.02°)
OKLab	oklab(16.08% 0.0004 -0.0853)
OKLCH	oklch(16.08% 0.085 270.3)
XYZ	xyz(0.6585, 0.3560, 2.9391)
Luminance	0.0036 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040531 #313004

analogous

#041B31 #040531 #190431

triadic

#040531 #310405 #053104

tetradic

#040531 #31041B #313004 #043119

square

#040531 #31041B #313004 #043119

split-complementary

#040531 #311904 #1B3104

monochromatic

#02031C #02031C #040531 #090B6A #0D11A2

Accessibility & contrast

On white

19.60

#040531 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#040531 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040531

19.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040531	#FFFFFF	#000000	##FFFFFF
##040531	1.00	19.60	1.07	19.60
#FFFFFF	19.60	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000E32

Deuteranopia (green-blind)

#000930

Tritanopia (blue-blind)

#00121A

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #040531;
/* rgb */ color: rgb(4, 5, 49);
/* oklch */ color: oklch(16.1% 0.085 270.3);

Tailwind

colors: {
  custom: {
    50: '#4b4869',
    500: '#040531',
    950: '#000000',
  },
}

SCSS

$custom: #040531;
$custom-light: #4b4869;
$custom-dark: #000000;

JSON

{
  "hex": "#040531",
  "rgb": {
    "r": 4,
    "g": 5,
    "b": 49
  },
  "hsl": {
    "h": 238.667,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.16077,
    "c": 0.08531,
    "h": 270.3
  },
  "luminance": 0.00356
}

Semantic roles & 50–950 ramp

primary

#040531

secondary

#73721D

accent

#F72DFB

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#010006

muted

#77777A

Preview Lab

Preview with #040531

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

Preview Lab → · Contrast checker → · Palette generator →