#100D39#100D39

#100D39 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.8% C 0.082 H 278.9°. Best body text is #FFFFFF at 18.44:1 contrast (WCAG AA passes).

Color values

HEX	#100D39
RGB	rgb(16, 13, 57)
HSL	hsl(244, 63%, 14%)
HSV	hsv(244, 77%, 22%)
CMYK	cmyk(71.9%, 77.2%, 0%, 77.6%)
CIE-LAB	lab(6.26, 17.00, -27.80)
CIE-LCH	lch(6.26, 32.59, 301.44°)
OKLab	oklab(19.81% 0.0127 -0.0808)
OKLCH	oklch(19.81% 0.082 278.9)
XYZ	xyz(1.0959, 0.6933, 3.9462)
Luminance	0.0069 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D39 #36390D

analogous

#0D2039 #100D39 #260D39

triadic

#100D39 #39100D #0D3910

tetradic

#100D39 #390D20 #36390D #0D3926

square

#100D39 #390D20 #36390D #0D3926

split-complementary

#100D39 #39260D #20390D

monochromatic

#070619 #070619 #100D39 #1E186B #2C249D

Accessibility & contrast

On white

18.44

#100D39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#100D39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D39

18.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D39	#FFFFFF	#000000	##FFFFFF
##100D39	1.00	18.44	1.14	18.44
#FFFFFF	18.44	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00163A

Deuteranopia (green-blind)

#001238

Tritanopia (blue-blind)

#001821

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #100d39;
/* rgb */ color: rgb(16, 13, 57);
/* oklch */ color: oklch(19.8% 0.082 278.9);

Tailwind

colors: {
  custom: {
    50: '#544c70',
    500: '#100d39',
    950: '#000000',
  },
}

SCSS

$custom: #100d39;
$custom-light: #544c70;
$custom-dark: #000000;

JSON

{
  "hex": "#100d39",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 57
  },
  "hsl": {
    "h": 244.091,
    "s": 62.857,
    "l": 13.725
  },
  "oklch": {
    "l": 0.19809,
    "c": 0.08182,
    "h": 278.9
  },
  "luminance": 0.00693
}

Semantic roles & 50–950 ramp

primary

#100D39

secondary

#70742D

accent

#E642DB

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #100D39

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

Preview Lab → · Contrast checker → · Palette generator →