#10104C#10104C

#10104C is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.5% C 0.107 H 273.8°. Best body text is #FFFFFF at 17.49:1 contrast (WCAG AA passes).

Color values

HEX	#10104C
RGB	rgb(16, 16, 76)
HSL	hsl(240, 65%, 18%)
HSV	hsv(240, 79%, 30%)
CMYK	cmyk(78.9%, 78.9%, 0%, 70.2%)
CIE-LAB	lab(9.01, 23.03, -36.77)
CIE-LCH	lch(9.01, 43.38, 302.06°)
OKLab	oklab(22.53% 0.007 -0.1063)
OKLCH	oklch(22.53% 0.107 273.8)
XYZ	xyz(1.7030, 1.0024, 6.9398)
Luminance	0.0100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10104C #4C4C10

analogous

#102E4C #10104C #2E104C

triadic

#10104C #4C1010 #104C10

tetradic

#10104C #4C102E #4C4C10 #104C2E

square

#10104C #4C102E #4C4C10 #104C2E

split-complementary

#10104C #4C2E10 #2E4C10

monochromatic

#050519 #050519 #10104C #1B1B7F #2525B1

Accessibility & contrast

On white

17.49

#10104C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#10104C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10104C

17.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10104C	#FFFFFF	#000000	##FFFFFF
##10104C	1.00	17.49	1.20	17.49
#FFFFFF	17.49	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C4E

Deuteranopia (green-blind)

#00174B

Tritanopia (blue-blind)

#00212C

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #10104c;
/* rgb */ color: rgb(16, 16, 76);
/* oklch */ color: oklch(22.5% 0.107 273.8);

Tailwind

colors: {
  custom: {
    50: '#594e7f',
    500: '#10104c',
    950: '#000000',
  },
}

SCSS

$custom: #10104c;
$custom-light: #594e7f;
$custom-dark: #000000;

JSON

{
  "hex": "#10104c",
  "rgb": {
    "r": 16,
    "g": 16,
    "b": 76
  },
  "hsl": {
    "h": 240,
    "s": 65.217,
    "l": 18.039
  },
  "oklch": {
    "l": 0.22532,
    "c": 0.10656,
    "h": 273.8
  },
  "luminance": 0.01003
}

Semantic roles & 50–950 ramp

primary

#10104C

secondary

#868632

accent

#E840E8

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04010A

muted

#79777C

Preview Lab

Preview with #10104C

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

Preview Lab → · Contrast checker → · Palette generator →