#01031F#01031F

#01031F is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 12.5% C 0.064 H 266.9°. Best body text is #FFFFFF at 20.31:1 contrast (WCAG AA passes).

Color values

HEX	#01031F
RGB	rgb(1, 3, 31)
HSL	hsl(236, 94%, 6%)
HSV	hsv(236, 97%, 12%)
CMYK	cmyk(96.8%, 90.3%, 0%, 87.8%)
CIE-LAB	lab(1.54, 5.34, -15.63)
CIE-LCH	lch(1.54, 16.51, 288.85°)
OKLab	oklab(12.48% -0.0034 -0.0637)
OKLCH	oklch(12.48% 0.064 266.9)
XYZ	xyz(0.2923, 0.1705, 1.3136)
Luminance	0.0017 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 8.31

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#01031F #1F1D01

analogous

#01121F #01031F #0E011F

triadic

#01031F #1F0103 #031F01

tetradic

#01031F #1F0112 #1F1D01 #011F0E

square

#01031F #1F0112 #1F1D01 #011F0E

split-complementary

#01031F #1F0E01 #121F01

monochromatic

#01031E #01031E #01031F #03095A #050E96

Accessibility & contrast

On white

20.31

#01031F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#01031F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #01031F

20.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##01031F	#FFFFFF	#000000	##FFFFFF
##01031F	1.00	20.31	1.03	20.31
#FFFFFF	20.31	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000720

Deuteranopia (green-blind)

#00041E

Tritanopia (blue-blind)

#00090F

Achromatopsia (no color)

#060606

Design tokens & code

CSS

--color: #01031f;
/* rgb */ color: rgb(1, 3, 31);
/* oklch */ color: oklch(12.5% 0.064 266.9);

Tailwind

colors: {
  custom: {
    50: '#46485a',
    500: '#01031f',
    950: '#000000',
  },
}

SCSS

$custom: #01031f;
$custom-light: #46485a;
$custom-dark: #000000;

JSON

{
  "hex": "#01031f",
  "rgb": {
    "r": 1,
    "g": 3,
    "b": 31
  },
  "hsl": {
    "h": 236,
    "s": 93.75,
    "l": 6.275
  },
  "oklch": {
    "l": 0.12475,
    "c": 0.06381,
    "h": 266.9
  },
  "luminance": 0.00171
}

Semantic roles & 50–950 ramp

primary

#01031F

secondary

#676115

accent

#F129FF

background

#F4F4F5

surface

#E6E6E9

border

#C2C2C5

text

#000004

muted

#777779

Preview Lab

Preview with #01031F

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

Preview Lab → · Contrast checker → · Palette generator →