#01012B#01012B

#01012B is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 13.6% C 0.087 H 266.7°. Best body text is #FFFFFF at 20.18:1 contrast (WCAG AA passes).

Color values

HEX	#01012B
RGB	rgb(1, 1, 43)
HSL	hsl(240, 95%, 9%)
HSV	hsv(240, 98%, 17%)
CMYK	cmyk(97.7%, 97.7%, 0%, 83.1%)
CIE-LAB	lab(1.83, 10.93, -24.55)
CIE-LCH	lch(1.83, 26.87, 294.00°)
OKLab	oklab(13.6% -0.005 -0.0867)
OKLCH	oklch(13.6% 0.087 266.7)
XYZ	xyz(0.4593, 0.2025, 2.2999)
Luminance	0.0020 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#01012B #2B2B01

analogous

#01162B #01012B #16012B

triadic

#01012B #2B0101 #012B01

tetradic

#01012B #2B0116 #2B2B01 #012B16

square

#01012B #2B0116 #2B2B01 #012B16

split-complementary

#01012B #2B1601 #162B01

monochromatic

#01011E #01011E #01012B #020267 #0404A3

Accessibility & contrast

On white

20.18

#01012B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.04

#01012B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #01012B

20.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##01012B	#FFFFFF	#000000	##FFFFFF
##01012B	1.00	20.18	1.04	20.18
#FFFFFF	20.18	1.00	21.00	1.00
#000000	1.04	21.00	1.00	21.00
##FFFFFF	20.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00092C

Deuteranopia (green-blind)

#00052A

Tritanopia (blue-blind)

#000C15

Achromatopsia (no color)

#070707

Design tokens & code

CSS

--color: #01012b;
/* rgb */ color: rgb(1, 1, 43);
/* oklch */ color: oklch(13.6% 0.087 266.7);

Tailwind

colors: {
  custom: {
    50: '#474764',
    500: '#01012b',
    950: '#000000',
  },
}

SCSS

$custom: #01012b;
$custom-light: #474764;
$custom-dark: #000000;

JSON

{
  "hex": "#01012b",
  "rgb": {
    "r": 1,
    "g": 1,
    "b": 43
  },
  "hsl": {
    "h": 240,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.13596,
    "c": 0.08688,
    "h": 266.7
  },
  "luminance": 0.00203
}

Semantic roles & 50–950 ramp

primary

#01012B

secondary

#717117

accent

#FF29FF

background

#F4F3F6

surface

#E7E5EB

border

#C3C1C6

text

#010005

muted

#77777A

Preview Lab

Preview with #01012B

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

Preview Lab → · Contrast checker → · Palette generator →