#100A4C#100A4C

#100A4C is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 21.6% C 0.113 H 275.3°. Best body text is #FFFFFF at 17.95:1 contrast (WCAG AA passes).

Color values

HEX	#100A4C
RGB	rgb(16, 10, 76)
HSL	hsl(245, 77%, 17%)
HSV	hsv(245, 87%, 30%)
CMYK	cmyk(78.9%, 86.8%, 0%, 70.2%)
CIE-LAB	lab(7.67, 26.82, -38.98)
CIE-LCH	lch(7.67, 47.32, 304.53°)
OKLab	oklab(21.58% 0.0104 -0.1127)
OKLCH	oklch(21.58% 0.113 275.3)
XYZ	xyz(1.6263, 0.8489, 6.9142)
Luminance	0.0085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.44

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100A4C #464C0A

analogous

#0A254C #100A4C #310A4C

triadic

#100A4C #4C100A #0A4C10

tetradic

#100A4C #4C0A25 #464C0A #0A4C31

square

#100A4C #4C0A25 #464C0A #0A4C31

split-complementary

#100A4C #4C310A #254C0A

monochromatic

#06041B #06041B #100A4C #1B1182 #2718B8

Accessibility & contrast

On white

17.95

#100A4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#100A4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100A4C

17.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100A4C	#FFFFFF	#000000	##FFFFFF
##100A4C	1.00	17.95	1.17	17.95
#FFFFFF	17.95	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A4E

Deuteranopia (green-blind)

#00144B

Tritanopia (blue-blind)

#001E2B

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #100a4c;
/* rgb */ color: rgb(16, 10, 76);
/* oklch */ color: oklch(21.6% 0.113 275.3);

Tailwind

colors: {
  custom: {
    50: '#5a4b7f',
    500: '#100a4c',
    950: '#000000',
  },
}

SCSS

$custom: #100a4c;
$custom-light: #5a4b7f;
$custom-dark: #000000;

JSON

{
  "hex": "#100a4c",
  "rgb": {
    "r": 16,
    "g": 10,
    "b": 76
  },
  "hsl": {
    "h": 245.455,
    "s": 76.744,
    "l": 16.863
  },
  "oklch": {
    "l": 0.2158,
    "c": 0.11323,
    "h": 275.3
  },
  "luminance": 0.00849
}

Semantic roles & 50–950 ramp

primary

#100A4C

secondary

#808929

accent

#F335E2

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04010A

muted

#79777C

Preview Lab

Preview with #100A4C

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

Preview Lab → · Contrast checker → · Palette generator →