#100C38#100C38

#100C38 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.5% C 0.082 H 279.7°. Best body text is #FFFFFF at 18.55:1 contrast (WCAG AA passes).

Color values

HEX	#100C38
RGB	rgb(16, 12, 56)
HSL	hsl(245, 65%, 13%)
HSV	hsv(245, 79%, 22%)
CMYK	cmyk(71.4%, 78.6%, 0%, 78%)
CIE-LAB	lab(5.95, 17.06, -27.59)
CIE-LCH	lch(5.95, 32.43, 301.73°)
OKLab	oklab(19.5% 0.0138 -0.0805)
OKLCH	oklch(19.5% 0.082 279.7)
XYZ	xyz(1.0587, 0.6585, 3.8119)
Luminance	0.0066 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100C38 #34380C

analogous

#0C1E38 #100C38 #260C38

triadic

#100C38 #38100C #0C3810

tetradic

#100C38 #380C1E #34380C #0C3826

square

#100C38 #380C1E #34380C #0C3826

split-complementary

#100C38 #38260C #1E380C

monochromatic

#070519 #070519 #100C38 #1E176A #2D229D

Accessibility & contrast

On white

18.55

#100C38 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#100C38 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100C38

18.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100C38	#FFFFFF	#000000	##FFFFFF
##100C38	1.00	18.55	1.13	18.55
#FFFFFF	18.55	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001539

Deuteranopia (green-blind)

#001137

Tritanopia (blue-blind)

#001820

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #100c38;
/* rgb */ color: rgb(16, 12, 56);
/* oklch */ color: oklch(19.5% 0.082 279.7);

Tailwind

colors: {
  custom: {
    50: '#544b6f',
    500: '#100c38',
    950: '#000000',
  },
}

SCSS

$custom: #100c38;
$custom-light: #544b6f;
$custom-dark: #000000;

JSON

{
  "hex": "#100c38",
  "rgb": {
    "r": 16,
    "g": 12,
    "b": 56
  },
  "hsl": {
    "h": 245.455,
    "s": 64.706,
    "l": 13.333
  },
  "oklch": {
    "l": 0.19504,
    "c": 0.08169,
    "h": 279.7
  },
  "luminance": 0.00659
}

Semantic roles & 50–950 ramp

primary

#100C38

secondary

#6E742C

accent

#E840D8

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #100C38

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

Preview Lab → · Contrast checker → · Palette generator →