#101D3F#101D3F

#101D3F is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.1% C 0.067 H 265.8°. Best body text is #FFFFFF at 16.54:1 contrast (WCAG AA passes).

Color values

HEX	#101D3F
RGB	rgb(16, 29, 63)
HSL	hsl(223, 59%, 15%)
HSV	hsv(223, 75%, 25%)
CMYK	cmyk(74.6%, 54%, 0%, 75.3%)
CIE-LAB	lab(11.60, 7.81, -23.45)
CIE-LCH	lch(11.60, 24.71, 288.42°)
OKLab	oklab(24.07% -0.0049 -0.0671)
OKLCH	oklch(24.07% 0.067 265.8)
XYZ	xyz(1.5499, 1.3476, 4.8801)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D3F #3F3210

analogous

#10343F #101D3F #1A103F

triadic

#101D3F #3F101D #1D3F10

tetradic

#101D3F #3F1034 #3F3210 #103F1A

square

#101D3F #3F1034 #3F3210 #103F1A

split-complementary

#101D3F #3F1A10 #343F10

monochromatic

#060B18 #060B18 #101D3F #1C3370 #294AA1

Accessibility & contrast

On white

16.54

#101D3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#101D3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D3F

16.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D3F	#FFFFFF	#000000	##FFFFFF
##101D3F	1.00	16.54	1.27	16.54
#FFFFFF	16.54	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C2140

Deuteranopia (green-blind)

#041D3E

Tritanopia (blue-blind)

#00252A

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #101d3f;
/* rgb */ color: rgb(16, 29, 63);
/* oklch */ color: oklch(24.1% 0.067 265.8);

Tailwind

colors: {
  custom: {
    50: '#545874',
    500: '#101d3f',
    950: '#000000',
  },
}

SCSS

$custom: #101d3f;
$custom-light: #545874;
$custom-dark: #000000;

JSON

{
  "hex": "#101d3f",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 63
  },
  "hsl": {
    "h": 223.404,
    "s": 59.494,
    "l": 15.49
  },
  "oklch": {
    "l": 0.24072,
    "c": 0.06729,
    "h": 265.8
  },
  "luminance": 0.01348
}

Semantic roles & 50–950 ramp

primary

#101D3F

secondary

#796532

accent

#B745E3

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #101D3F

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

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