#100F38#100F38

#100F38 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.1% C 0.077 H 278.0°. Best body text is #FFFFFF at 18.30:1 contrast (WCAG AA passes).

Color values

HEX	#100F38
RGB	rgb(16, 15, 56)
HSL	hsl(241, 58%, 14%)
HSV	hsv(241, 73%, 22%)
CMYK	cmyk(71.4%, 73.2%, 0%, 78%)
CIE-LAB	lab(6.66, 15.36, -26.44)
CIE-LCH	lch(6.66, 30.58, 300.17°)
OKLab	oklab(20.11% 0.0107 -0.0765)
OKLCH	oklch(20.11% 0.077 278)
XYZ	xyz(1.0981, 0.7372, 3.8251)
Luminance	0.0074 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F38 #37380F

analogous

#0F2338 #100F38 #250F38

triadic

#100F38 #38100F #0F3810

tetradic

#100F38 #380F23 #37380F #0F3825

square

#100F38 #380F23 #37380F #0F3825

split-complementary

#100F38 #38250F #23380F

monochromatic

#070618 #070618 #100F38 #1E1C68 #2C2999

Accessibility & contrast

On white

18.30

#100F38 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#100F38 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F38

18.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F38	#FFFFFF	#000000	##FFFFFF
##100F38	1.00	18.30	1.15	18.30
#FFFFFF	18.30	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001639

Deuteranopia (green-blind)

#001337

Tritanopia (blue-blind)

#001921

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #100f38;
/* rgb */ color: rgb(16, 15, 56);
/* oklch */ color: oklch(20.1% 0.077 278.0);

Tailwind

colors: {
  custom: {
    50: '#544d6f',
    500: '#100f38',
    950: '#000000',
  },
}

SCSS

$custom: #100f38;
$custom-light: #544d6f;
$custom-dark: #000000;

JSON

{
  "hex": "#100f38",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 56
  },
  "hsl": {
    "h": 241.463,
    "s": 57.746,
    "l": 13.922
  },
  "oklch": {
    "l": 0.2011,
    "c": 0.07725,
    "h": 278
  },
  "luminance": 0.00737
}

Semantic roles & 50–950 ramp

primary

#100F38

secondary

#717230

accent

#E147DD

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #100F38

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

Preview Lab → · Contrast checker → · Palette generator →