#101F2B#101F2B

#101F2B is a very dark, muted cyan. Relative luminance 0.013; OKLCH L 23.2% C 0.031 H 243.8°. Best body text is #FFFFFF at 16.76:1 contrast (WCAG AA passes).

Color values

HEX	#101F2B
RGB	rgb(16, 31, 43)
HSL	hsl(207, 46%, 12%)
HSV	hsv(207, 63%, 17%)
CMYK	cmyk(62.8%, 27.9%, 0%, 83.1%)
CIE-LAB	lab(11.02, -2.05, -10.01)
CIE-LCH	lch(11.02, 10.22, 258.44°)
OKLab	oklab(23.2% -0.0137 -0.0279)
OKLCH	oklch(23.2% 0.031 243.8)
XYZ	xyz(1.1396, 1.2645, 2.4690)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F2B #2B1C10

analogous

#102B2A #101F2B #10122B

triadic

#101F2B #2B101F #1F2B10

tetradic

#101F2B #2A102B #2B1C10 #122B10

square

#101F2B #2A102B #2B1C10 #122B10

split-complementary

#101F2B #2B1012 #2B2A10

monochromatic

#081016 #081016 #101F2B #213F58 #315F84

Accessibility & contrast

On white

16.76

#101F2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#101F2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F2B

16.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F2B	#FFFFFF	#000000	##FFFFFF
##101F2B	1.00	16.76	1.25	16.76
#FFFFFF	16.76	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A1F2C

Deuteranopia (green-blind)

#161C2B

Tritanopia (blue-blind)

#042223

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #101f2b;
/* rgb */ color: rgb(16, 31, 43);
/* oklch */ color: oklch(23.2% 0.031 243.8);

Tailwind

colors: {
  custom: {
    50: '#505a64',
    500: '#101f2b',
    950: '#000000',
  },
}

SCSS

$custom: #101f2b;
$custom-light: #505a64;
$custom-dark: #000000;

JSON

{
  "hex": "#101f2b",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 43
  },
  "hsl": {
    "h": 206.667,
    "s": 45.763,
    "l": 11.569
  },
  "oklch": {
    "l": 0.23202,
    "c": 0.03113,
    "h": 243.8
  },
  "luminance": 0.01265
}

Semantic roles & 50–950 ramp

primary

#101F2B

secondary

#644933

accent

#8D52D5

background

#F4F5F5

surface

#E7E9EA

border

#C3C5C6

text

#020305

muted

#787879

Preview Lab

Preview with #101F2B

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

Preview Lab → · Contrast checker → · Palette generator →