#040840#040840

#040840 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.8% C 0.103 H 267.9°. Best body text is #FFFFFF at 18.85:1 contrast (WCAG AA passes).

Color values

HEX	#040840
RGB	rgb(4, 8, 64)
HSL	hsl(236, 88%, 13%)
HSV	hsv(236, 94%, 25%)
CMYK	cmyk(93.8%, 87.5%, 0%, 74.9%)
CIE-LAB	lab(5.14, 20.64, -34.70)
CIE-LCH	lch(5.14, 40.38, 300.75°)
OKLab	oklab(18.81% -0.0038 -0.1027)
OKLCH	oklch(18.81% 0.103 267.9)
XYZ	xyz(1.0620, 0.5695, 4.9034)
Luminance	0.0057 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 2.37

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040840 #403C04

analogous

#042640 #040840 #1E0440

triadic

#040840 #400408 #084004

tetradic

#040840 #400426 #403C04 #04401E

square

#040840 #400426 #403C04 #04401E

split-complementary

#040840 #401E04 #264004

monochromatic

#02041D #02041D #040840 #080F7A #0B16B3

Accessibility & contrast

On white

18.85

#040840 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#040840 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040840

18.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040840	#FFFFFF	#000000	##FFFFFF
##040840	1.00	18.85	1.11	18.85
#FFFFFF	18.85	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001442

Deuteranopia (green-blind)

#000E3F

Tritanopia (blue-blind)

#001924

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #040840;
/* rgb */ color: rgb(4, 8, 64);
/* oklch */ color: oklch(18.8% 0.103 267.9);

Tailwind

colors: {
  custom: {
    50: '#514976',
    500: '#040840',
    950: '#000000',
  },
}

SCSS

$custom: #040840;
$custom-light: #514976;
$custom-dark: #000000;

JSON

{
  "hex": "#040840",
  "rgb": {
    "r": 4,
    "g": 8,
    "b": 64
  },
  "hsl": {
    "h": 236,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.18805,
    "c": 0.10278,
    "h": 267.9
  },
  "luminance": 0.0057
}

Semantic roles & 50–950 ramp

primary

#040840

secondary

#817B1F

accent

#F029FE

background

#F4F4F7

surface

#E7E6ED

border

#C3C2C8

text

#030008

muted

#78777B

Preview Lab

Preview with #040840

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

Preview Lab → · Contrast checker → · Palette generator →