#101C4A#101C4A

#101C4A is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.8% C 0.087 H 268.3°. Best body text is #FFFFFF at 16.32:1 contrast (WCAG AA passes).

Color values

HEX	#101C4A
RGB	rgb(16, 28, 74)
HSL	hsl(228, 64%, 18%)
HSV	hsv(228, 78%, 29%)
CMYK	cmyk(78.4%, 62.2%, 0%, 71%)
CIE-LAB	lab(12.19, 13.35, -30.19)
CIE-LCH	lch(12.19, 33.00, 293.85°)
OKLab	oklab(24.8% -0.0026 -0.0869)
OKLCH	oklch(24.8% 0.087 268.3)
XYZ	xyz(1.8645, 1.4349, 6.6559)
Luminance	0.0143 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.30

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101C4A #4A3E10

analogous

#10394A #101C4A #21104A

triadic

#101C4A #4A101C #1C4A10

tetradic

#101C4A #4A1039 #4A3E10 #104A21

square

#101C4A #4A1039 #4A3E10 #104A21

split-complementary

#101C4A #4A2110 #394A10

monochromatic

#050A19 #050A19 #101C4A #1B2F7C #2642AF

Accessibility & contrast

On white

16.32

#101C4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#101C4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101C4A

16.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101C4A	#FFFFFF	#000000	##FFFFFF
##101C4A	1.00	16.32	1.29	16.32
#FFFFFF	16.32	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234C

Deuteranopia (green-blind)

#001D49

Tritanopia (blue-blind)

#00272F

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #101c4a;
/* rgb */ color: rgb(16, 28, 74);
/* oklch */ color: oklch(24.8% 0.087 268.3);

Tailwind

colors: {
  custom: {
    50: '#57577d',
    500: '#101c4a',
    950: '#000000',
  },
}

SCSS

$custom: #101c4a;
$custom-light: #57577d;
$custom-dark: #000000;

JSON

{
  "hex": "#101c4a",
  "rgb": {
    "r": 16,
    "g": 28,
    "b": 74
  },
  "hsl": {
    "h": 227.586,
    "s": 64.444,
    "l": 17.647
  },
  "oklch": {
    "l": 0.24802,
    "c": 0.08699,
    "h": 268.3
  },
  "luminance": 0.01435
}

Semantic roles & 50–950 ramp

primary

#101C4A

secondary

#847332

accent

#C540E7

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #101C4A

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

Preview Lab → · Contrast checker → · Palette generator →