#101F3D#101F3D

#101F3D is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.4% C 0.061 H 262.7°. Best body text is #FFFFFF at 16.34:1 contrast (WCAG AA passes).

Color values

HEX	#101F3D
RGB	rgb(16, 31, 61)
HSL	hsl(220, 58%, 15%)
HSV	hsv(220, 74%, 24%)
CMYK	cmyk(73.8%, 49.2%, 0%, 76.1%)
CIE-LAB	lab(12.14, 5.40, -21.19)
CIE-LCH	lch(12.14, 21.86, 284.31°)
OKLab	oklab(24.43% -0.0077 -0.0604)
OKLCH	oklch(24.43% 0.061 262.7)
XYZ	xyz(1.5457, 1.4269, 4.6079)
Luminance	0.0143 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101F3D #3D2E10

analogous

#10353D #101F3D #17103D

triadic

#101F3D #3D101F #1F3D10

tetradic

#101F3D #3D1035 #3D2E10 #103D17

square

#101F3D #3D1035 #3D2E10 #103D17

split-complementary

#101F3D #3D1710 #353D10

monochromatic

#060C18 #060C18 #101F3D #1D386D #29509E

Accessibility & contrast

On white

16.34

#101F3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#101F3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101F3D

16.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101F3D	#FFFFFF	#000000	##FFFFFF
##101F3D	1.00	16.34	1.29	16.34
#FFFFFF	16.34	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11223E

Deuteranopia (green-blind)

#0A1E3C

Tritanopia (blue-blind)

#00262B

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #101f3d;
/* rgb */ color: rgb(16, 31, 61);
/* oklch */ color: oklch(24.4% 0.061 262.7);

Tailwind

colors: {
  custom: {
    50: '#545a73',
    500: '#101f3d',
    950: '#000000',
  },
}

SCSS

$custom: #101f3d;
$custom-light: #545a73;
$custom-dark: #000000;

JSON

{
  "hex": "#101f3d",
  "rgb": {
    "r": 16,
    "g": 31,
    "b": 61
  },
  "hsl": {
    "h": 220,
    "s": 58.442,
    "l": 15.098
  },
  "oklch": {
    "l": 0.24432,
    "c": 0.06092,
    "h": 262.7
  },
  "luminance": 0.01427
}

Semantic roles & 50–950 ramp

primary

#101F3D

secondary

#776032

accent

#AE46E2

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #101F3D

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

Preview Lab → · Contrast checker → · Palette generator →