#101B3C#101B3C

#101B3C is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.3% C 0.065 H 267.3°. Best body text is #FFFFFF at 16.88:1 contrast (WCAG AA passes).

Color values

HEX	#101B3C
RGB	rgb(16, 27, 60)
HSL	hsl(225, 58%, 15%)
HSV	hsv(225, 73%, 24%)
CMYK	cmyk(73.3%, 55%, 0%, 76.5%)
CIE-LAB	lab(10.70, 8.07, -22.77)
CIE-LCH	lch(10.70, 24.16, 289.51°)
OKLab	oklab(23.31% -0.003 -0.0651)
OKLCH	oklch(23.31% 0.065 267.3)
XYZ	xyz(1.4210, 1.2201, 4.4347)
Luminance	0.0122 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101B3C #3C3110

analogous

#10313C #101B3C #1B103C

triadic

#101B3C #3C101B #1B3C10

tetradic

#101B3C #3C1031 #3C3110 #103C1B

square

#101B3C #3C1031 #3C3110 #103C1B

split-complementary

#101B3C #3C1B10 #313C10

monochromatic

#060B18 #060B18 #101B3C #1D316C #2A469D

Accessibility & contrast

On white

16.88

#101B3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#101B3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101B3C

16.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101B3C	#FFFFFF	#000000	##FFFFFF
##101B3C	1.00	16.88	1.24	16.88
#FFFFFF	16.88	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A1F3D

Deuteranopia (green-blind)

#031B3B

Tritanopia (blue-blind)

#002328

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #101b3c;
/* rgb */ color: rgb(16, 27, 60);
/* oklch */ color: oklch(23.3% 0.065 267.3);

Tailwind

colors: {
  custom: {
    50: '#545672',
    500: '#101b3c',
    950: '#000000',
  },
}

SCSS

$custom: #101b3c;
$custom-light: #545672;
$custom-dark: #000000;

JSON

{
  "hex": "#101b3c",
  "rgb": {
    "r": 16,
    "g": 27,
    "b": 60
  },
  "hsl": {
    "h": 225,
    "s": 57.895,
    "l": 14.902
  },
  "oklch": {
    "l": 0.23311,
    "c": 0.06522,
    "h": 267.3
  },
  "luminance": 0.0122
}

Semantic roles & 50–950 ramp

primary

#101B3C

secondary

#766532

accent

#BB47E1

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #101B3C

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

Preview Lab → · Contrast checker → · Palette generator →