#101A2B#101A2B

#101A2B is a very dark, muted blue. Relative luminance 0.010; OKLCH L 21.8% C 0.037 H 260.6°. Best body text is #FFFFFF at 17.43:1 contrast (WCAG AA passes).

Color values

HEX	#101A2B
RGB	rgb(16, 26, 43)
HSL	hsl(218, 46%, 12%)
HSV	hsv(218, 63%, 17%)
CMYK	cmyk(62.8%, 39.5%, 0%, 83.1%)
CIE-LAB	lab(9.18, 1.70, -12.88)
CIE-LCH	lch(9.18, 12.99, 277.51°)
OKLab	oklab(21.76% -0.006 -0.0362)
OKLCH	oklch(21.76% 0.037 260.6)
XYZ	xyz(1.0190, 1.0233, 2.4289)
Luminance	0.0102 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101A2B #2B2110

analogous

#10282B #101A2B #14102B

triadic

#101A2B #2B101A #1A2B10

tetradic

#101A2B #2B1028 #2B2110 #102B14

square

#101A2B #2B1028 #2B2110 #102B14

split-complementary

#101A2B #2B1410 #282B10

monochromatic

#080D16 #080D16 #101A2B #213558 #315084

Accessibility & contrast

On white

17.43

#101A2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#101A2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101A2B

17.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101A2B	#FFFFFF	#000000	##FFFFFF
##101A2B	1.00	17.43	1.20	17.43
#FFFFFF	17.43	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131B2C

Deuteranopia (green-blind)

#10192B

Tritanopia (blue-blind)

#051E20

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #101a2b;
/* rgb */ color: rgb(16, 26, 43);
/* oklch */ color: oklch(21.8% 0.037 260.6);

Tailwind

colors: {
  custom: {
    50: '#505664',
    500: '#101a2b',
    950: '#000000',
  },
}

SCSS

$custom: #101a2b;
$custom-light: #505664;
$custom-dark: #000000;

JSON

{
  "hex": "#101a2b",
  "rgb": {
    "r": 16,
    "g": 26,
    "b": 43
  },
  "hsl": {
    "h": 217.778,
    "s": 45.763,
    "l": 11.569
  },
  "oklch": {
    "l": 0.21758,
    "c": 0.03671,
    "h": 260.6
  },
  "luminance": 0.01023
}

Semantic roles & 50–950 ramp

primary

#101A2B

secondary

#645233

accent

#A552D5

background

#F4F5F6

surface

#E7E8EB

border

#C3C4C6

text

#020305

muted

#78787A

Preview Lab

Preview with #101A2B

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

Preview Lab → · Contrast checker → · Palette generator →