#100F3A#100F3A

#100F3A is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.3% C 0.080 H 277.5°. Best body text is #FFFFFF at 18.24:1 contrast (WCAG AA passes).

Color values

HEX	#100F3A
RGB	rgb(16, 15, 58)
HSL	hsl(241, 59%, 14%)
HSV	hsv(241, 74%, 23%)
CMYK	cmyk(72.4%, 74.1%, 0%, 77.3%)
CIE-LAB	lab(6.84, 16.27, -27.59)
CIE-LCH	lch(6.84, 32.03, 300.53°)
OKLab	oklab(20.32% 0.0105 -0.0798)
OKLCH	oklch(20.32% 0.08 277.5)
XYZ	xyz(1.1480, 0.7572, 4.0878)
Luminance	0.0076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F3A #393A0F

analogous

#0F243A #100F3A #260F3A

triadic

#100F3A #3A100F #0F3A10

tetradic

#100F3A #3A0F24 #393A0F #0F3A26

square

#100F3A #3A0F24 #393A0F #0F3A26

split-complementary

#100F3A #3A260F #243A0F

monochromatic

#070618 #070618 #100F3A #1D1C6B #2B289B

Accessibility & contrast

On white

18.24

#100F3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#100F3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F3A

18.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F3A	#FFFFFF	#000000	##FFFFFF
##100F3A	1.00	18.24	1.15	18.24
#FFFFFF	18.24	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00173B

Deuteranopia (green-blind)

#001339

Tritanopia (blue-blind)

#001A22

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #100f3a;
/* rgb */ color: rgb(16, 15, 58);
/* oklch */ color: oklch(20.3% 0.080 277.5);

Tailwind

colors: {
  custom: {
    50: '#544d71',
    500: '#100f3a',
    950: '#000000',
  },
}

SCSS

$custom: #100f3a;
$custom-light: #544d71;
$custom-dark: #000000;

JSON

{
  "hex": "#100f3a",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 58
  },
  "hsl": {
    "h": 241.395,
    "s": 58.904,
    "l": 14.314
  },
  "oklch": {
    "l": 0.2032,
    "c": 0.08048,
    "h": 277.5
  },
  "luminance": 0.00757
}

Semantic roles & 50–950 ramp

primary

#100F3A

secondary

#737430

accent

#E246DE

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #100F3A

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

Preview Lab → · Contrast checker → · Palette generator →