#040E30#040E30

#040E30 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.1% C 0.070 H 265.4°. Best body text is #FFFFFF at 18.91:1 contrast (WCAG AA passes).

Color values

HEX	#040E30
RGB	rgb(4, 14, 48)
HSL	hsl(226, 85%, 10%)
HSV	hsv(226, 92%, 19%)
CMYK	cmyk(91.7%, 70.8%, 0%, 81.2%)
CIE-LAB	lab(5.00, 8.79, -23.27)
CIE-LCH	lch(5.00, 24.88, 290.69°)
OKLab	oklab(18.08% -0.0056 -0.0696)
OKLCH	oklch(18.08% 0.07 265.4)
XYZ	xyz(0.7404, 0.5532, 2.8635)
Luminance	0.0055 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 4.59

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040E30 #302604

analogous

#042430 #040E30 #100430

triadic

#040E30 #30040E #0E3004

tetradic

#040E30 #300424 #302604 #043010

square

#040E30 #300424 #302604 #043010

split-complementary

#040E30 #301004 #243004

monochromatic

#02081C #02081C #040E30 #091E68 #0D2FA1

Accessibility & contrast

On white

18.91

#040E30 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#040E30 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040E30

18.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040E30	#FFFFFF	#000000	##FFFFFF
##040E30	1.00	18.91	1.11	18.91
#FFFFFF	18.91	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001331

Deuteranopia (green-blind)

#000F2F

Tritanopia (blue-blind)

#00171D

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #040e30;
/* rgb */ color: rgb(4, 14, 48);
/* oklch */ color: oklch(18.1% 0.070 265.4);

Tailwind

colors: {
  custom: {
    50: '#4b4d68',
    500: '#040e30',
    950: '#000000',
  },
}

SCSS

$custom: #040e30;
$custom-light: #4b4d68;
$custom-dark: #000000;

JSON

{
  "hex": "#040e30",
  "rgb": {
    "r": 4,
    "g": 14,
    "b": 48
  },
  "hsl": {
    "h": 226.364,
    "s": 84.615,
    "l": 10.196
  },
  "oklch": {
    "l": 0.18082,
    "c": 0.06988,
    "h": 265.4
  },
  "luminance": 0.00553
}

Semantic roles & 50–950 ramp

primary

#040E30

secondary

#725F1D

accent

#CC2DFB

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #040E30

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

Preview Lab → · Contrast checker → · Palette generator →