#010C23#010C23

#010C23 is a very dark, muted blue. Relative luminance 0.004; OKLCH L 15.9% C 0.053 H 258.1°. Best body text is #FFFFFF at 19.48:1 contrast (WCAG AA passes).

Color values

HEX	#010C23
RGB	rgb(1, 12, 35)
HSL	hsl(221, 94%, 7%)
HSV	hsv(221, 97%, 14%)
CMYK	cmyk(97.1%, 65.7%, 0%, 86.3%)
CIE-LAB	lab(3.53, 3.11, -15.74)
CIE-LCH	lch(3.53, 16.04, 281.18°)
OKLab	oklab(15.91% -0.0109 -0.0516)
OKLCH	oklch(15.91% 0.053 258.1)
XYZ	xyz(0.4473, 0.3907, 1.6416)
Luminance	0.0039 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010C23 #231801

analogous

#011D23 #010C23 #070123

triadic

#010C23 #23010C #0C2301

tetradic

#010C23 #23011D #231801 #012307

square

#010C23 #23011D #231801 #012307

split-complementary

#010C23 #230701 #1D2301

monochromatic

#010A1E #010A1E #010C23 #03205F #04359A

Accessibility & contrast

On white

19.48

#010C23 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#010C23 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010C23

19.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010C23	#FFFFFF	#000000	##FFFFFF
##010C23	1.00	19.48	1.08	19.48
#FFFFFF	19.48	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#020F24

Deuteranopia (green-blind)

#000B23

Tritanopia (blue-blind)

#001215

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #010c23;
/* rgb */ color: rgb(1, 12, 35);
/* oklch */ color: oklch(15.9% 0.053 258.1);

Tailwind

colors: {
  custom: {
    50: '#474c5e',
    500: '#010c23',
    950: '#000000',
  },
}

SCSS

$custom: #010c23;
$custom-light: #474c5e;
$custom-dark: #000000;

JSON

{
  "hex": "#010c23",
  "rgb": {
    "r": 1,
    "g": 12,
    "b": 35
  },
  "hsl": {
    "h": 220.588,
    "s": 94.444,
    "l": 7.059
  },
  "oklch": {
    "l": 0.15907,
    "c": 0.05275,
    "h": 258.1
  },
  "luminance": 0.00391
}

Semantic roles & 50–950 ramp

primary

#010C23

secondary

#6A4F16

accent

#BA29FF

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000104

muted

#777779

Preview Lab

Preview with #010C23

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

Preview Lab → · Contrast checker → · Palette generator →