#101B31#101B31

#101B31 is a very dark, muted blue. Relative luminance 0.011; OKLCH L 22.5% C 0.046 H 263.1°. Best body text is #FFFFFF at 17.17:1 contrast (WCAG AA passes).

Color values

HEX	#101B31
RGB	rgb(16, 27, 49)
HSL	hsl(220, 51%, 13%)
HSV	hsv(220, 67%, 19%)
CMYK	cmyk(67.3%, 44.9%, 0%, 80.8%)
CIE-LAB	lab(9.92, 3.39, -16.11)
CIE-LCH	lch(9.92, 16.46, 281.87°)
OKLab	oklab(22.45% -0.0055 -0.0456)
OKLCH	oklch(22.45% 0.046 263.1)
XYZ	xyz(1.1598, 1.1157, 3.0594)
Luminance	0.0112 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B31 #312610

analogous

#102B31 #101B31 #151031

triadic

#101B31 #31101B #1B3110

tetradic

#101B31 #31102B #312610 #103115

square

#101B31 #31102B #312610 #103115

split-complementary

#101B31 #311510 #2B3110

monochromatic

#080D17 #080D17 #101B31 #1F345F #2E4E8D

Accessibility & contrast

On white

17.17

#101B31 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#101B31 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B31

17.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B31	#FFFFFF	#000000	##FFFFFF
##101B31	1.00	17.17	1.22	17.17
#FFFFFF	17.17	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#121D32

Deuteranopia (green-blind)

#0E1A31

Tritanopia (blue-blind)

#012023

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #101b31;
/* rgb */ color: rgb(16, 27, 49);
/* oklch */ color: oklch(22.5% 0.046 263.1);

Tailwind

colors: {
  custom: {
    50: '#515669',
    500: '#101b31',
    950: '#000000',
  },
}

SCSS

$custom: #101b31;
$custom-light: #515669;
$custom-dark: #000000;

JSON

{
  "hex": "#101b31",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 49
  },
  "hsl": {
    "h": 220,
    "s": 50.769,
    "l": 12.745
  },
  "oklch": {
    "l": 0.22453,
    "c": 0.04596,
    "h": 263.1
  },
  "luminance": 0.01116
}

Semantic roles & 50–950 ramp

primary

#101B31

secondary

#6A5833

accent

#AB4EDA

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020306

muted

#78787A

Preview Lab

Preview with #101B31

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

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