#040D30#040D30

#040D30 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.8% C 0.071 H 266.1°. Best body text is #FFFFFF at 19.00:1 contrast (WCAG AA passes).

Color values

HEX	#040D30
RGB	rgb(4, 13, 48)
HSL	hsl(228, 85%, 10%)
HSV	hsv(228, 92%, 19%)
CMYK	cmyk(91.7%, 72.9%, 0%, 81.2%)
CIE-LAB	lab(4.76, 9.27, -23.65)
CIE-LCH	lch(4.76, 25.41, 291.41°)
OKLab	oklab(17.84% -0.0048 -0.0712)
OKLCH	oklch(17.84% 0.071 266.1)
XYZ	xyz(0.7273, 0.5270, 2.8591)
Luminance	0.0053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 4.30

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040D30 #302704

analogous

#042330 #040D30 #110430

triadic

#040D30 #30040D #0D3004

tetradic

#040D30 #300423 #302704 #043011

square

#040D30 #300423 #302704 #043011

split-complementary

#040D30 #301104 #233004

monochromatic

#02081C #02081C #040D30 #091C68 #0D2CA1

Accessibility & contrast

On white

19.00

#040D30 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#040D30 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040D30

19.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040D30	#FFFFFF	#000000	##FFFFFF
##040D30	1.00	19.00	1.11	19.00
#FFFFFF	19.00	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	19.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001231

Deuteranopia (green-blind)

#000E2F

Tritanopia (blue-blind)

#00161C

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040d30;
/* rgb */ color: rgb(4, 13, 48);
/* oklch */ color: oklch(17.8% 0.071 266.1);

Tailwind

colors: {
  custom: {
    50: '#4b4c68',
    500: '#040d30',
    950: '#000000',
  },
}

SCSS

$custom: #040d30;
$custom-light: #4b4c68;
$custom-dark: #000000;

JSON

{
  "hex": "#040d30",
  "rgb": {
    "r": 4,
    "g": 13,
    "b": 48
  },
  "hsl": {
    "h": 227.727,
    "s": 84.615,
    "l": 10.196
  },
  "oklch": {
    "l": 0.17837,
    "c": 0.07141,
    "h": 266.1
  },
  "luminance": 0.00527
}

Semantic roles & 50–950 ramp

primary

#040D30

secondary

#72611D

accent

#D12DFB

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #040D30

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

Preview Lab → · Contrast checker → · Palette generator →