#010A1B#010A1B

#010A1B is a very dark, muted blue. Relative luminance 0.003; OKLCH L 14.5% C 0.042 H 255.0°. Best body text is #FFFFFF at 19.80:1 contrast (WCAG AA passes).

Color values

HEX	#010A1B
RGB	rgb(1, 10, 27)
HSL	hsl(219, 93%, 5%)
HSV	hsv(219, 96%, 11%)
CMYK	cmyk(96.3%, 63%, 0%, 89.4%)
CIE-LAB	lab(2.73, 1.28, -10.65)
CIE-LCH	lch(2.73, 10.73, 276.84°)
OKLab	oklab(14.53% -0.0108 -0.0402)
OKLCH	oklch(14.53% 0.042 255)
XYZ	xyz(0.3188, 0.3026, 1.0783)
Luminance	0.0030 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010A1B #1B1201

analogous

#01171B #010A1B #05011B

triadic

#010A1B #1B010A #0A1B01

tetradic

#010A1B #1B0117 #1B1201 #011B05

square

#010A1B #1B0117 #1B1201 #011B05

split-complementary

#010A1B #1B0501 #171B01

monochromatic

#010B1E #010B1E #010B1E #032056 #053691

Accessibility & contrast

On white

19.80

#010A1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#010A1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010A1B

19.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010A1B	#FFFFFF	#000000	##FFFFFF
##010A1B	1.00	19.80	1.06	19.80
#FFFFFF	19.80	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#030B1C

Deuteranopia (green-blind)

#01091B

Tritanopia (blue-blind)

#000E11

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #010a1b;
/* rgb */ color: rgb(1, 10, 27);
/* oklch */ color: oklch(14.5% 0.042 255.0);

Tailwind

colors: {
  custom: {
    50: '#464b57',
    500: '#010a1b',
    950: '#000000',
  },
}

SCSS

$custom: #010a1b;
$custom-light: #464b57;
$custom-dark: #000000;

JSON

{
  "hex": "#010a1b",
  "rgb": {
    "r": 1,
    "g": 10,
    "b": 27
  },
  "hsl": {
    "h": 219.231,
    "s": 92.857,
    "l": 5.49
  },
  "oklch": {
    "l": 0.14528,
    "c": 0.04165,
    "h": 255
  },
  "luminance": 0.00303
}

Semantic roles & 50–950 ramp

primary

#010A1B

secondary

#634815

accent

#B529FF

background

#F3F4F5

surface

#E5E7E9

border

#C1C3C5

text

#000103

muted

#767778

Preview Lab

Preview with #010A1B

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

Preview Lab → · Contrast checker → · Palette generator →