#100C39#100C39

#100C39 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.6% C 0.083 H 279.4°. Best body text is #FFFFFF at 18.52:1 contrast (WCAG AA passes).

Color values

HEX	#100C39
RGB	rgb(16, 12, 57)
HSL	hsl(245, 65%, 14%)
HSV	hsv(245, 79%, 22%)
CMYK	cmyk(71.9%, 78.9%, 0%, 77.6%)
CIE-LAB	lab(6.04, 17.54, -28.17)
CIE-LCH	lch(6.04, 33.18, 301.91°)
OKLab	oklab(19.61% 0.0136 -0.0821)
OKLCH	oklch(19.61% 0.083 279.4)
XYZ	xyz(1.0834, 0.6684, 3.9420)
Luminance	0.0067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100C39 #35390C

analogous

#0C1E39 #100C39 #260C39

triadic

#100C39 #39100C #0C3910

tetradic

#100C39 #390C1E #35390C #0C3926

square

#100C39 #390C1E #35390C #0C3926

split-complementary

#100C39 #39260C #1E390C

monochromatic

#070519 #070519 #100C39 #1E176C #2C219E

Accessibility & contrast

On white

18.52

#100C39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#100C39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100C39

18.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100C39	#FFFFFF	#000000	##FFFFFF
##100C39	1.00	18.52	1.13	18.52
#FFFFFF	18.52	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00153A

Deuteranopia (green-blind)

#001238

Tritanopia (blue-blind)

#001821

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #100c39;
/* rgb */ color: rgb(16, 12, 57);
/* oklch */ color: oklch(19.6% 0.083 279.4);

Tailwind

colors: {
  custom: {
    50: '#544b70',
    500: '#100c39',
    950: '#000000',
  },
}

SCSS

$custom: #100c39;
$custom-light: #544b70;
$custom-dark: #000000;

JSON

{
  "hex": "#100c39",
  "rgb": {
    "r": 16,
    "g": 12,
    "b": 57
  },
  "hsl": {
    "h": 245.333,
    "s": 65.217,
    "l": 13.529
  },
  "oklch": {
    "l": 0.19615,
    "c": 0.08325,
    "h": 279.4
  },
  "luminance": 0.00669
}

Semantic roles & 50–950 ramp

primary

#100C39

secondary

#6F752C

accent

#E840D9

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #100C39

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

Preview Lab → · Contrast checker → · Palette generator →