#01031D#01031D

#01031D is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 12.2% C 0.060 H 267.0°. Best body text is #FFFFFF at 20.35:1 contrast (WCAG AA passes).

Color values

HEX	#01031D
RGB	rgb(1, 3, 29)
HSL	hsl(236, 93%, 6%)
HSV	hsv(236, 97%, 11%)
CMYK	cmyk(96.6%, 89.7%, 0%, 88.6%)
CIE-LAB	lab(1.45, 4.69, -14.16)
CIE-LCH	lch(1.45, 14.92, 288.31°)
OKLab	oklab(12.19% -0.0031 -0.0604)
OKLCH	oklch(12.19% 0.061 267)
XYZ	xyz(0.2668, 0.1603, 1.1790)
Luminance	0.0016 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 9.24

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#01031D #1D1B01

analogous

#01111D #01031D #0D011D

triadic

#01031D #1D0103 #031D01

tetradic

#01031D #1D0111 #1D1B01 #011D0D

square

#01031D #1D0111 #1D1B01 #011D0D

split-complementary

#01031D #1D0D01 #111D01

monochromatic

#01031E #01031E #01031E #030958 #050F93

Accessibility & contrast

On white

20.35

#01031D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#01031D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #01031D

20.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##01031D	#FFFFFF	#000000	##FFFFFF
##01031D	1.00	20.35	1.03	20.35
#FFFFFF	20.35	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00061E

Deuteranopia (green-blind)

#00041C

Tritanopia (blue-blind)

#00090E

Achromatopsia (no color)

#050505

Design tokens & code

CSS

--color: #01031d;
/* rgb */ color: rgb(1, 3, 29);
/* oklch */ color: oklch(12.2% 0.060 267.0);

Tailwind

colors: {
  custom: {
    50: '#464858',
    500: '#01031d',
    950: '#000000',
  },
}

SCSS

$custom: #01031d;
$custom-light: #464858;
$custom-dark: #000000;

JSON

{
  "hex": "#01031d",
  "rgb": {
    "r": 1,
    "g": 3,
    "b": 29
  },
  "hsl": {
    "h": 235.714,
    "s": 93.333,
    "l": 5.882
  },
  "oklch": {
    "l": 0.12188,
    "c": 0.0605,
    "h": 267
  },
  "luminance": 0.0016
}

Semantic roles & 50–950 ramp

primary

#01031D

secondary

#655F15

accent

#F029FF

background

#F3F4F5

surface

#E5E6E9

border

#C1C2C5

text

#000003

muted

#767778

Preview Lab

Preview with #01031D

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

Preview Lab → · Contrast checker → · Palette generator →