#101D39#101D39

#101D39 is a very dark, muted blue. Relative luminance 0.013; OKLCH L 23.6% C 0.057 H 263.8°. Best body text is #FFFFFF at 16.71:1 contrast (WCAG AA passes).

Color values

HEX	#101D39
RGB	rgb(16, 29, 57)
HSL	hsl(221, 56%, 14%)
HSV	hsv(221, 72%, 22%)
CMYK	cmyk(71.9%, 49.1%, 0%, 77.6%)
CIE-LAB	lab(11.16, 5.22, -19.90)
CIE-LCH	lch(11.16, 20.57, 284.71°)
OKLab	oklab(23.59% -0.0061 -0.0567)
OKLCH	oklch(23.59% 0.057 263.8)
XYZ	xyz(1.3913, 1.2842, 4.0447)
Luminance	0.0128 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D39 #392C10

analogous

#103239 #101D39 #181039

triadic

#101D39 #39101D #1D3910

tetradic

#101D39 #391032 #392C10 #103918

square

#101D39 #391032 #392C10 #103918

split-complementary

#101D39 #391810 #323910

monochromatic

#070C18 #070C18 #101D39 #1D3569 #2B4E99

Accessibility & contrast

On white

16.71

#101D39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#101D39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D39

16.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D39	#FFFFFF	#000000	##FFFFFF
##101D39	1.00	16.71	1.26	16.71
#FFFFFF	16.71	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10203A

Deuteranopia (green-blind)

#0A1C38

Tritanopia (blue-blind)

#002328

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #101d39;
/* rgb */ color: rgb(16, 29, 57);
/* oklch */ color: oklch(23.6% 0.057 263.8);

Tailwind

colors: {
  custom: {
    50: '#53586f',
    500: '#101d39',
    950: '#000000',
  },
}

SCSS

$custom: #101d39;
$custom-light: #53586f;
$custom-dark: #000000;

JSON

{
  "hex": "#101d39",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 57
  },
  "hsl": {
    "h": 220.976,
    "s": 56.164,
    "l": 14.314
  },
  "oklch": {
    "l": 0.23592,
    "c": 0.05701,
    "h": 263.8
  },
  "luminance": 0.01284
}

Semantic roles & 50–950 ramp

primary

#101D39

secondary

#735E32

accent

#B048DF

background

#F4F5F6

surface

#E7E9EC

border

#C3C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #101D39

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

Preview Lab → · Contrast checker → · Palette generator →