#101D3E#101D3E

#101D3E is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.0% C 0.066 H 265.6°. Best body text is #FFFFFF at 16.57:1 contrast (WCAG AA passes).

Color values

HEX	#101D3E
RGB	rgb(16, 29, 62)
HSL	hsl(223, 59%, 15%)
HSV	hsv(223, 74%, 24%)
CMYK	cmyk(74.2%, 53.2%, 0%, 75.7%)
CIE-LAB	lab(11.53, 7.38, -22.87)
CIE-LCH	lch(11.53, 24.03, 287.88°)
OKLab	oklab(23.99% -0.0051 -0.0654)
OKLCH	oklch(23.99% 0.066 265.6)
XYZ	xyz(1.5223, 1.3365, 4.7343)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D3E #3E3110

analogous

#10343E #101D3E #1A103E

triadic

#101D3E #3E101D #1D3E10

tetradic

#101D3E #3E1034 #3E3110 #103E1A

square

#101D3E #3E1034 #3E3110 #103E1A

split-complementary

#101D3E #3E1A10 #343E10

monochromatic

#060B18 #060B18 #101D3E #1D346F #294B9F

Accessibility & contrast

On white

16.57

#101D3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#101D3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D3E

16.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D3E	#FFFFFF	#000000	##FFFFFF
##101D3E	1.00	16.57	1.27	16.57
#FFFFFF	16.57	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D213F

Deuteranopia (green-blind)

#051D3D

Tritanopia (blue-blind)

#00252A

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #101d3e;
/* rgb */ color: rgb(16, 29, 62);
/* oklch */ color: oklch(24.0% 0.066 265.6);

Tailwind

colors: {
  custom: {
    50: '#545873',
    500: '#101d3e',
    950: '#000000',
  },
}

SCSS

$custom: #101d3e;
$custom-light: #545873;
$custom-dark: #000000;

JSON

{
  "hex": "#101d3e",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 62
  },
  "hsl": {
    "h": 223.043,
    "s": 58.974,
    "l": 15.294
  },
  "oklch": {
    "l": 0.23989,
    "c": 0.0656,
    "h": 265.6
  },
  "luminance": 0.01337
}

Semantic roles & 50–950 ramp

primary

#101D3E

secondary

#786432

accent

#B646E2

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #101D3E

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

Preview Lab → · Contrast checker → · Palette generator →