#0A1B2D#0A1B2D

#0A1B2D is a very dark, muted cyan. Relative luminance 0.010; OKLCH L 21.8% C 0.042 H 251.5°. Best body text is #FFFFFF at 17.39:1 contrast (WCAG AA passes).

Color values

HEX	#0A1B2D
RGB	rgb(10, 27, 45)
HSL	hsl(211, 64%, 11%)
HSV	hsv(211, 78%, 18%)
CMYK	cmyk(77.8%, 40%, 0%, 82.4%)
CIE-LAB	lab(9.30, 0.15, -14.19)
CIE-LCH	lch(9.30, 14.19, 270.62°)
OKLab	oklab(21.79% -0.0134 -0.0401)
OKLCH	oklch(21.79% 0.042 251.5)
XYZ	xyz(0.9906, 1.0378, 2.6302)
Luminance	0.0104 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A1B2D #2D1C0A

analogous

#0A2C2D #0A1B2D #0A0A2D

triadic

#0A1B2D #2D0A1B #1B2D0A

tetradic

#0A1B2D #2D0A2C #2D1C0A #0A2D0A

square

#0A1B2D #2D0A2C #2D1C0A #0A2D0A

split-complementary

#0A1B2D #2D0A0A #2C2D0A

monochromatic

#060F19 #060F19 #0A1B2D #15395F #205791

Accessibility & contrast

On white

17.39

#0A1B2D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#0A1B2D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A1B2D

17.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A1B2D	#FFFFFF	#000000	##FFFFFF
##0A1B2D	1.00	17.39	1.21	17.39
#FFFFFF	17.39	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131C2E

Deuteranopia (green-blind)

#0E192D

Tritanopia (blue-blind)

#001F21

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0a1b2d;
/* rgb */ color: rgb(10, 27, 45);
/* oklch */ color: oklch(21.8% 0.042 251.5);

Tailwind

colors: {
  custom: {
    50: '#4d5766',
    500: '#0a1b2d',
    950: '#000000',
  },
}

SCSS

$custom: #0a1b2d;
$custom-light: #4d5766;
$custom-dark: #000000;

JSON

{
  "hex": "#0a1b2d",
  "rgb": {
    "r": 10,
    "g": 27,
    "b": 45
  },
  "hsl": {
    "h": 210.857,
    "s": 63.636,
    "l": 10.784
  },
  "oklch": {
    "l": 0.21789,
    "c": 0.04232,
    "h": 251.5
  },
  "luminance": 0.01038
}

Semantic roles & 50–950 ramp

primary

#0A1B2D

secondary

#6A4A29

accent

#9641E7

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#010305

muted

#77787A

Preview Lab

Preview with #0A1B2D

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

Preview Lab → · Contrast checker → · Palette generator →