#101D4A#101D4A

#101D4A is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.0% C 0.086 H 267.6°. Best body text is #FFFFFF at 16.20:1 contrast (WCAG AA passes).

Color values

HEX	#101D4A
RGB	rgb(16, 29, 74)
HSL	hsl(227, 64%, 18%)
HSV	hsv(227, 78%, 29%)
CMYK	cmyk(78.4%, 60.8%, 0%, 71%)
CIE-LAB	lab(12.50, 12.58, -29.68)
CIE-LCH	lch(12.50, 32.24, 292.98°)
OKLab	oklab(25.04% -0.0036 -0.0854)
OKLCH	oklch(25.04% 0.086 267.6)
XYZ	xyz(1.8887, 1.4831, 6.6640)
Luminance	0.0148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101D4A #4A3D10

analogous

#103A4A #101D4A #20104A

triadic

#101D4A #4A101D #1D4A10

tetradic

#101D4A #4A103A #4A3D10 #104A20

square

#101D4A #4A103A #4A3D10 #104A20

split-complementary

#101D4A #4A2010 #3A4A10

monochromatic

#050A19 #050A19 #101D4A #1B317C #2644AF

Accessibility & contrast

On white

16.20

#101D4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#101D4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101D4A

16.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101D4A	#FFFFFF	#000000	##FFFFFF
##101D4A	1.00	16.20	1.30	16.20
#FFFFFF	16.20	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234C

Deuteranopia (green-blind)

#001E49

Tritanopia (blue-blind)

#002830

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #101d4a;
/* rgb */ color: rgb(16, 29, 74);
/* oklch */ color: oklch(25.0% 0.086 267.6);

Tailwind

colors: {
  custom: {
    50: '#57587d',
    500: '#101d4a',
    950: '#000000',
  },
}

SCSS

$custom: #101d4a;
$custom-light: #57587d;
$custom-dark: #000000;

JSON

{
  "hex": "#101d4a",
  "rgb": {
    "r": 16,
    "g": 29,
    "b": 74
  },
  "hsl": {
    "h": 226.552,
    "s": 64.444,
    "l": 17.647
  },
  "oklch": {
    "l": 0.25036,
    "c": 0.08551,
    "h": 267.6
  },
  "luminance": 0.01483
}

Semantic roles & 50–950 ramp

primary

#101D4A

secondary

#847232

accent

#C240E7

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #101D4A

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

Preview Lab → · Contrast checker → · Palette generator →