#10104A#10104A

#10104A is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.3% C 0.104 H 274.1°. Best body text is #FFFFFF at 17.57:1 contrast (WCAG AA passes).

Color values

HEX	#10104A
RGB	rgb(16, 16, 74)
HSL	hsl(240, 64%, 18%)
HSV	hsv(240, 78%, 29%)
CMYK	cmyk(78.4%, 78.4%, 0%, 71%)
CIE-LAB	lab(8.78, 22.24, -35.76)
CIE-LCH	lch(8.78, 42.11, 301.89°)
OKLab	oklab(22.3% 0.0073 -0.1034)
OKLCH	oklch(22.3% 0.104 274.1)
XYZ	xyz(1.6346, 0.9750, 6.5793)
Luminance	0.0097 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10104A #4A4A10

analogous

#102D4A #10104A #2D104A

triadic

#10104A #4A1010 #104A10

tetradic

#10104A #4A102D #4A4A10 #104A2D

square

#10104A #4A102D #4A4A10 #104A2D

split-complementary

#10104A #4A2D10 #2D4A10

monochromatic

#050519 #050519 #10104A #1B1B7C #2626AF

Accessibility & contrast

On white

17.57

#10104A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#10104A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10104A

17.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10104A	#FFFFFF	#000000	##FFFFFF
##10104A	1.00	17.57	1.20	17.57
#FFFFFF	17.57	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C4C

Deuteranopia (green-blind)

#001649

Tritanopia (blue-blind)

#00202B

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #10104a;
/* rgb */ color: rgb(16, 16, 74);
/* oklch */ color: oklch(22.3% 0.104 274.1);

Tailwind

colors: {
  custom: {
    50: '#594e7d',
    500: '#10104a',
    950: '#000000',
  },
}

SCSS

$custom: #10104a;
$custom-light: #594e7d;
$custom-dark: #000000;

JSON

{
  "hex": "#10104a",
  "rgb": {
    "r": 16,
    "g": 16,
    "b": 74
  },
  "hsl": {
    "h": 240,
    "s": 64.444,
    "l": 17.647
  },
  "oklch": {
    "l": 0.22299,
    "c": 0.10364,
    "h": 274.1
  },
  "luminance": 0.00975
}

Semantic roles & 50–950 ramp

primary

#10104A

secondary

#848432

accent

#E740E7

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04010A

muted

#79777C

Preview Lab

Preview with #10104A

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

Preview Lab → · Contrast checker → · Palette generator →