#101D4D#101D4D

#101D4D is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.3% C 0.090 H 267.9°. Best body text is #FFFFFF at 16.09:1 contrast (WCAG AA passes).

Color values

HEX	#101D4D
RGB	rgb(16, 29, 77)
HSL	hsl(227, 66%, 18%)
HSV	hsv(227, 79%, 30%)
CMYK	cmyk(79.2%, 62.3%, 0%, 69.8%)
CIE-LAB	lab(12.76, 13.88, -31.32)
CIE-LCH	lch(12.76, 34.26, 293.90°)
OKLab	oklab(25.32% -0.0034 -0.0903)
OKLCH	oklch(25.32% 0.09 267.9)
XYZ	xyz(1.9921, 1.5245, 7.2090)
Luminance	0.0152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.68

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D4D #4D4010

analogous

#103B4D #101D4D #21104D

triadic

#101D4D #4D101D #1D4D10

tetradic

#101D4D #4D103B #4D4010 #104D21

square

#101D4D #4D103B #4D4010 #104D21

split-complementary

#101D4D #4D2110 #3B4D10

monochromatic

#050A19 #050A1A #101D4D #1B3080 #2543B2

Accessibility & contrast

On white

16.09

#101D4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#101D4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D4D

16.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D4D	#FFFFFF	#000000	##FFFFFF
##101D4D	1.00	16.09	1.31	16.09
#FFFFFF	16.09	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00244F

Deuteranopia (green-blind)

#001E4C

Tritanopia (blue-blind)

#002931

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #101d4d;
/* rgb */ color: rgb(16, 29, 77);
/* oklch */ color: oklch(25.3% 0.090 267.9);

Tailwind

colors: {
  custom: {
    50: '#58587f',
    500: '#101d4d',
    950: '#000000',
  },
}

SCSS

$custom: #101d4d;
$custom-light: #58587f;
$custom-dark: #000000;

JSON

{
  "hex": "#101d4d",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 77
  },
  "hsl": {
    "h": 227.213,
    "s": 65.591,
    "l": 18.235
  },
  "oklch": {
    "l": 0.25317,
    "c": 0.09033,
    "h": 267.9
  },
  "luminance": 0.01525
}

Semantic roles & 50–950 ramp

primary

#101D4D

secondary

#877532

accent

#C43FE9

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #101D4D

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

Preview Lab → · Contrast checker → · Palette generator →