#101B2C#101B2C

#101B2C is a very dark, muted blue. Relative luminance 0.011; OKLCH L 22.1% C 0.037 H 258.8°. Best body text is #FFFFFF at 17.28:1 contrast (WCAG AA passes).

Color values

HEX	#101B2C
RGB	rgb(16, 27, 44)
HSL	hsl(216, 47%, 12%)
HSV	hsv(216, 64%, 17%)
CMYK	cmyk(63.6%, 38.6%, 0%, 82.7%)
CIE-LAB	lab(9.61, 1.34, -12.95)
CIE-LCH	lch(9.61, 13.02, 275.89°)
OKLab	oklab(22.11% -0.0072 -0.0364)
OKLCH	oklch(22.11% 0.037 258.8)
XYZ	xyz(1.0601, 1.0758, 2.5342)
Luminance	0.0108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B2C #2C2110

analogous

#10292C #101B2C #13102C

triadic

#101B2C #2C101B #1B2C10

tetradic

#101B2C #2C1029 #2C2110 #102C13

square

#101B2C #2C1029 #2C2110 #102C13

split-complementary

#101B2C #2C1310 #292C10

monochromatic

#080E16 #080E16 #101B2C #203759 #315286

Accessibility & contrast

On white

17.28

#101B2C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#101B2C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B2C

17.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B2C	#FFFFFF	#000000	##FFFFFF
##101B2C	1.00	17.28	1.22	17.28
#FFFFFF	17.28	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#141C2D

Deuteranopia (green-blind)

#11192C

Tritanopia (blue-blind)

#041F21

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #101b2c;
/* rgb */ color: rgb(16, 27, 44);
/* oklch */ color: oklch(22.1% 0.037 258.8);

Tailwind

colors: {
  custom: {
    50: '#505765',
    500: '#101b2c',
    950: '#000000',
  },
}

SCSS

$custom: #101b2c;
$custom-light: #505765;
$custom-dark: #000000;

JSON

{
  "hex": "#101b2c",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 44
  },
  "hsl": {
    "h": 216.429,
    "s": 46.667,
    "l": 11.765
  },
  "oklch": {
    "l": 0.22108,
    "c": 0.03712,
    "h": 258.8
  },
  "luminance": 0.01076
}

Semantic roles & 50–950 ramp

primary

#101B2C

secondary

#655133

accent

#A251D6

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020305

muted

#78787A

Preview Lab

Preview with #101B2C

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

Preview Lab → · Contrast checker → · Palette generator →