#010D31#010D31

#010D31 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.7% C 0.075 H 262.3°. Best body text is #FFFFFF at 19.04:1 contrast (WCAG AA passes).

Color values

HEX	#010D31
RGB	rgb(1, 13, 49)
HSL	hsl(225, 96%, 10%)
HSV	hsv(225, 98%, 19%)
CMYK	cmyk(98%, 73.5%, 0%, 80.8%)
CIE-LAB	lab(4.66, 9.02, -24.56)
CIE-LCH	lch(4.66, 26.17, 290.16°)
OKLab	oklab(17.69% -0.0101 -0.0742)
OKLCH	oklch(17.69% 0.075 262.3)
XYZ	xyz(0.7106, 0.5160, 2.9673)
Luminance	0.0052 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 4.24

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010D31 #312501

analogous

#012531 #010D31 #0D0131

triadic

#010D31 #31010D #0D3101

tetradic

#010D31 #310125 #312501 #01310D

square

#010D31 #310125 #312501 #01310D

split-complementary

#010D31 #310D01 #253101

monochromatic

#01081E #01081E #010D31 #021D6D #032DA9

Accessibility & contrast

On white

19.04

#010D31 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#010D31 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010D31

19.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010D31	#FFFFFF	#000000	##FFFFFF
##010D31	1.00	19.04	1.10	19.04
#FFFFFF	19.04	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001232

Deuteranopia (green-blind)

#000E30

Tritanopia (blue-blind)

#00161D

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #010d31;
/* rgb */ color: rgb(1, 13, 49);
/* oklch */ color: oklch(17.7% 0.075 262.3);

Tailwind

colors: {
  custom: {
    50: '#4a4c69',
    500: '#010d31',
    950: '#000000',
  },
}

SCSS

$custom: #010d31;
$custom-light: #4a4c69;
$custom-dark: #000000;

JSON

{
  "hex": "#010d31",
  "rgb": {
    "r": 1,
    "g": 13,
    "b": 49
  },
  "hsl": {
    "h": 225,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.17694,
    "c": 0.07493,
    "h": 262.3
  },
  "luminance": 0.00516
}

Semantic roles & 50–950 ramp

primary

#010D31

secondary

#775F17

accent

#C929FF

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #010D31

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

Preview Lab → · Contrast checker → · Palette generator →