#100F27#100F27

#100F27 is a very dark, muted blue. Relative luminance 0.006; OKLCH L 18.5% C 0.048 H 282.5°. Best body text is #FFFFFF at 18.76:1 contrast (WCAG AA passes).

Color values

HEX	#100F27
RGB	rgb(16, 15, 39)
HSL	hsl(243, 44%, 11%)
HSV	hsv(243, 62%, 15%)
CMYK	cmyk(59%, 61.5%, 0%, 84.7%)
CIE-LAB	lab(5.40, 7.45, -15.82)
CIE-LCH	lch(5.40, 17.49, 295.22°)
OKLab	oklab(18.5% 0.0104 -0.0466)
OKLCH	oklch(18.5% 0.048 282.5)
XYZ	xyz(0.7506, 0.5983, 1.9950)
Luminance	0.0060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 8.19

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F27 #26270F

analogous

#0F1A27 #100F27 #1C0F27

triadic

#100F27 #27100F #0F2710

tetradic

#100F27 #270F1A #26270F #0F271C

square

#100F27 #270F1A #26270F #0F271C

split-complementary

#100F27 #271C0F #1A270F

monochromatic

#090916 #090916 #100F27 #222053 #34317F

Accessibility & contrast

On white

18.76

#100F27 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#100F27 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F27

18.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F27	#FFFFFF	#000000	##FFFFFF
##100F27	1.00	18.76	1.12	18.76
#FFFFFF	18.76	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#051328

Deuteranopia (green-blind)

#051126

Tritanopia (blue-blind)

#081419

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #100f27;
/* rgb */ color: rgb(16, 15, 39);
/* oklch */ color: oklch(18.5% 0.048 282.5);

Tailwind

colors: {
  custom: {
    50: '#4f4d61',
    500: '#100f27',
    950: '#000000',
  },
}

SCSS

$custom: #100f27;
$custom-light: #4f4d61;
$custom-dark: #000000;

JSON

{
  "hex": "#100f27",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 39
  },
  "hsl": {
    "h": 242.5,
    "s": 44.444,
    "l": 10.588
  },
  "oklch": {
    "l": 0.18502,
    "c": 0.04778,
    "h": 282.5
  },
  "luminance": 0.00598
}

Semantic roles & 50–950 ramp

primary

#100F27

secondary

#5E6032

accent

#D454CF

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#020105

muted

#787779

Preview Lab

Preview with #100F27

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

Preview Lab → · Contrast checker → · Palette generator →