#010B23#010B23

#010B23 is a very dark, muted blue. Relative luminance 0.004; OKLCH L 15.6% C 0.054 H 259.4°. Best body text is #FFFFFF at 19.56:1 contrast (WCAG AA passes).

Color values

HEX	#010B23
RGB	rgb(1, 11, 35)
HSL	hsl(222, 94%, 7%)
HSV	hsv(222, 97%, 14%)
CMYK	cmyk(97.1%, 68.6%, 0%, 86.3%)
CIE-LAB	lab(3.32, 3.55, -16.07)
CIE-LCH	lch(3.32, 16.45, 282.45°)
OKLab	oklab(15.62% -0.01 -0.0534)
OKLCH	oklch(15.62% 0.054 259.4)
XYZ	xyz(0.4355, 0.3671, 1.6377)
Luminance	0.0037 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 8.38

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010B23 #231901

analogous

#011C23 #010B23 #080123

triadic

#010B23 #23010B #0B2301

tetradic

#010B23 #23011C #231901 #012308

square

#010B23 #23011C #231901 #012308

split-complementary

#010B23 #230801 #1C2301

monochromatic

#01091E #01091E #010B23 #031E5F #04309A

Accessibility & contrast

On white

19.56

#010B23 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#010B23 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010B23

19.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010B23	#FFFFFF	#000000	##FFFFFF
##010B23	1.00	19.56	1.07	19.56
#FFFFFF	19.56	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000E24

Deuteranopia (green-blind)

#000A23

Tritanopia (blue-blind)

#001115

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #010b23;
/* rgb */ color: rgb(1, 11, 35);
/* oklch */ color: oklch(15.6% 0.054 259.4);

Tailwind

colors: {
  custom: {
    50: '#474c5e',
    500: '#010b23',
    950: '#000000',
  },
}

SCSS

$custom: #010b23;
$custom-light: #474c5e;
$custom-dark: #000000;

JSON

{
  "hex": "#010b23",
  "rgb": {
    "r": 1,
    "g": 11,
    "b": 35
  },
  "hsl": {
    "h": 222.353,
    "s": 94.444,
    "l": 7.059
  },
  "oklch": {
    "l": 0.1562,
    "c": 0.05436,
    "h": 259.4
  },
  "luminance": 0.00367
}

Semantic roles & 50–950 ramp

primary

#010B23

secondary

#6A5116

accent

#C029FF

background

#F4F4F5

surface

#E6E7E9

border

#C2C3C5

text

#000104

muted

#777779

Preview Lab

Preview with #010B23

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

Preview Lab → · Contrast checker → · Palette generator →