#100C3A#100C3A

#100C3A is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.7% C 0.085 H 279.1°. Best body text is #FFFFFF at 18.49:1 contrast (WCAG AA passes).

Color values

HEX	#100C3A
RGB	rgb(16, 12, 58)
HSL	hsl(245, 66%, 14%)
HSV	hsv(245, 79%, 23%)
CMYK	cmyk(72.4%, 79.3%, 0%, 77.3%)
CIE-LAB	lab(6.13, 18.01, -28.74)
CIE-LCH	lch(6.13, 33.92, 302.07°)
OKLab	oklab(19.73% 0.0135 -0.0837)
OKLCH	oklch(19.73% 0.085 279.1)
XYZ	xyz(1.1086, 0.6785, 4.0747)
Luminance	0.0068 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100C3A #363A0C

analogous

#0C1F3A #100C3A #270C3A

triadic

#100C3A #3A100C #0C3A10

tetradic

#100C3A #3A0C1F #363A0C #0C3A27

square

#100C3A #3A0C1F #363A0C #0C3A27

split-complementary

#100C3A #3A270C #1F3A0C

monochromatic

#070519 #070519 #100C3A #1E166D #2C219F

Accessibility & contrast

On white

18.49

#100C3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#100C3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100C3A

18.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100C3A	#FFFFFF	#000000	##FFFFFF
##100C3A	1.00	18.49	1.14	18.49
#FFFFFF	18.49	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00153B

Deuteranopia (green-blind)

#001239

Tritanopia (blue-blind)

#001821

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #100c3a;
/* rgb */ color: rgb(16, 12, 58);
/* oklch */ color: oklch(19.7% 0.085 279.1);

Tailwind

colors: {
  custom: {
    50: '#544b71',
    500: '#100c3a',
    950: '#000000',
  },
}

SCSS

$custom: #100c3a;
$custom-light: #544b71;
$custom-dark: #000000;

JSON

{
  "hex": "#100c3a",
  "rgb": {
    "r": 16,
    "g": 12,
    "b": 58
  },
  "hsl": {
    "h": 245.217,
    "s": 65.714,
    "l": 13.725
  },
  "oklch": {
    "l": 0.19727,
    "c": 0.0848,
    "h": 279.1
  },
  "luminance": 0.00679
}

Semantic roles & 50–950 ramp

primary

#100C3A

secondary

#70762C

accent

#E93FDA

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #100C3A

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

Preview Lab → · Contrast checker → · Palette generator →