#040B35#040B35

#040B35 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.0% C 0.082 H 267.5°. Best body text is #FFFFFF at 19.01:1 contrast (WCAG AA passes).

Color values

HEX	#040B35
RGB	rgb(4, 11, 53)
HSL	hsl(231, 86%, 11%)
HSV	hsv(231, 92%, 21%)
CMYK	cmyk(92.5%, 79.2%, 0%, 79.2%)
CIE-LAB	lab(4.72, 12.94, -27.42)
CIE-LCH	lch(4.72, 30.32, 295.26°)
OKLab	oklab(17.96% -0.0036 -0.0824)
OKLCH	oklch(17.96% 0.082 267.5)
XYZ	xyz(0.8121, 0.5221, 3.4254)
Luminance	0.0052 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040B35 #352E04

analogous

#042335 #040B35 #150435

triadic

#040B35 #35040B #0B3504

tetradic

#040B35 #350423 #352E04 #043515

square

#040B35 #350423 #352E04 #043515

split-complementary

#040B35 #351504 #233504

monochromatic

#02061C #02061C #040B35 #08176E #0D23A7

Accessibility & contrast

On white

19.01

#040B35 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#040B35 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040B35

19.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040B35	#FFFFFF	#000000	##FFFFFF
##040B35	1.00	19.01	1.10	19.01
#FFFFFF	19.01	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001336

Deuteranopia (green-blind)

#000E34

Tritanopia (blue-blind)

#00161E

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040b35;
/* rgb */ color: rgb(4, 11, 53);
/* oklch */ color: oklch(18.0% 0.082 267.5);

Tailwind

colors: {
  custom: {
    50: '#4c4b6d',
    500: '#040b35',
    950: '#000000',
  },
}

SCSS

$custom: #040b35;
$custom-light: #4c4b6d;
$custom-dark: #000000;

JSON

{
  "hex": "#040b35",
  "rgb": {
    "r": 4,
    "g": 11,
    "b": 53
  },
  "hsl": {
    "h": 231.429,
    "s": 85.965,
    "l": 11.176
  },
  "oklch": {
    "l": 0.17962,
    "c": 0.08246,
    "h": 267.5
  },
  "luminance": 0.00522
}

Semantic roles & 50–950 ramp

primary

#040B35

secondary

#776A1E

accent

#DE2CFC

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020107

muted

#78777A

Preview Lab

Preview with #040B35

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

Preview Lab → · Contrast checker → · Palette generator →