#101B3D#101B3D

#101B3D is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.4% C 0.067 H 267.5°. Best body text is #FFFFFF at 16.85:1 contrast (WCAG AA passes).

Color values

HEX	#101B3D
RGB	rgb(16, 27, 61)
HSL	hsl(225, 58%, 15%)
HSV	hsv(225, 74%, 24%)
CMYK	cmyk(73.8%, 55.7%, 0%, 76.1%)
CIE-LAB	lab(10.78, 8.50, -23.35)
CIE-LCH	lch(10.78, 24.85, 289.99°)
OKLab	oklab(23.4% -0.0029 -0.0669)
OKLCH	oklch(23.4% 0.067 267.5)
XYZ	xyz(1.4476, 1.2308, 4.5753)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B3D #3D3210

analogous

#10323D #101B3D #1B103D

triadic

#101B3D #3D101B #1B3D10

tetradic

#101B3D #3D1032 #3D3210 #103D1B

square

#101B3D #3D1032 #3D3210 #103D1B

split-complementary

#101B3D #3D1B10 #323D10

monochromatic

#060B18 #060B18 #101B3D #1D306D #29469E

Accessibility & contrast

On white

16.85

#101B3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#101B3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B3D

16.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B3D	#FFFFFF	#000000	##FFFFFF
##101B3D	1.00	16.85	1.25	16.85
#FFFFFF	16.85	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#091F3E

Deuteranopia (green-blind)

#021B3C

Tritanopia (blue-blind)

#002329

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #101b3d;
/* rgb */ color: rgb(16, 27, 61);
/* oklch */ color: oklch(23.4% 0.067 267.5);

Tailwind

colors: {
  custom: {
    50: '#545673',
    500: '#101b3d',
    950: '#000000',
  },
}

SCSS

$custom: #101b3d;
$custom-light: #545673;
$custom-dark: #000000;

JSON

{
  "hex": "#101b3d",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 61
  },
  "hsl": {
    "h": 225.333,
    "s": 58.442,
    "l": 15.098
  },
  "oklch": {
    "l": 0.23395,
    "c": 0.06693,
    "h": 267.5
  },
  "luminance": 0.01231
}

Semantic roles & 50–950 ramp

primary

#101B3D

secondary

#776632

accent

#BC46E2

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #101B3D

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

Preview Lab → · Contrast checker → · Palette generator →