#101C4C#101C4C

#101C4C is a very dark, moderate blue. Relative luminance 0.015; OKLCH L 25.0% C 0.090 H 268.4°. Best body text is #FFFFFF at 16.25:1 contrast (WCAG AA passes).

Color values

HEX	#101C4C
RGB	rgb(16, 28, 76)
HSL	hsl(228, 65%, 18%)
HSV	hsv(228, 79%, 30%)
CMYK	cmyk(78.9%, 63.2%, 0%, 70.2%)
CIE-LAB	lab(12.37, 14.21, -31.28)
CIE-LCH	lch(12.37, 34.35, 294.44°)
OKLab	oklab(24.99% -0.0025 -0.0902)
OKLCH	oklch(24.99% 0.09 268.4)
XYZ	xyz(1.9330, 1.4623, 7.0165)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.36

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101C4C #4C4010

analogous

#103A4C #101C4C #22104C

triadic

#101C4C #4C101C #1C4C10

tetradic

#101C4C #4C103A #4C4010 #104C22

square

#101C4C #4C103A #4C4010 #104C22

split-complementary

#101C4C #4C2210 #3A4C10

monochromatic

#050919 #050919 #101C4C #1B2F7F #2541B1

Accessibility & contrast

On white

16.25

#101C4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#101C4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101C4C

16.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101C4C	#FFFFFF	#000000	##FFFFFF
##101C4C	1.00	16.25	1.29	16.25
#FFFFFF	16.25	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234E

Deuteranopia (green-blind)

#001E4B

Tritanopia (blue-blind)

#002830

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #101c4c;
/* rgb */ color: rgb(16, 28, 76);
/* oklch */ color: oklch(25.0% 0.090 268.4);

Tailwind

colors: {
  custom: {
    50: '#58577e',
    500: '#101c4c',
    950: '#000000',
  },
}

SCSS

$custom: #101c4c;
$custom-light: #58577e;
$custom-dark: #000000;

JSON

{
  "hex": "#101c4c",
  "rgb": {
    "r": 16,
    "g": 28,
    "b": 76
  },
  "hsl": {
    "h": 228,
    "s": 65.217,
    "l": 18.039
  },
  "oklch": {
    "l": 0.24991,
    "c": 0.09019,
    "h": 268.4
  },
  "luminance": 0.01462
}

Semantic roles & 50–950 ramp

primary

#101C4C

secondary

#867532

accent

#C640E8

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #101C4C

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

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