#100B3A#100B3A

#100B3A is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.5% C 0.086 H 279.6°. Best body text is #FFFFFF at 18.57:1 contrast (WCAG AA passes).

Color values

HEX	#100B3A
RGB	rgb(16, 11, 58)
HSL	hsl(246, 68%, 14%)
HSV	hsv(246, 81%, 23%)
CMYK	cmyk(72.4%, 81%, 0%, 77.3%)
CIE-LAB	lab(5.92, 18.52, -29.09)
CIE-LCH	lch(5.92, 34.49, 302.49°)
OKLab	oklab(19.54% 0.0144 -0.085)
OKLCH	oklch(19.54% 0.086 279.6)
XYZ	xyz(1.0968, 0.6549, 4.0708)
Luminance	0.0066 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B3A #353A0B

analogous

#0B1D3A #100B3A #270B3A

triadic

#100B3A #3A100B #0B3A10

tetradic

#100B3A #3A0B1D #353A0B #0B3A27

square

#100B3A #3A0B1D #353A0B #0B3A27

split-complementary

#100B3A #3A270B #1D3A0B

monochromatic

#07051A #07051A #100B3A #1E156D #2C1FA1

Accessibility & contrast

On white

18.57

#100B3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#100B3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B3A

18.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B3A	#FFFFFF	#000000	##FFFFFF
##100B3A	1.00	18.57	1.13	18.57
#FFFFFF	18.57	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00153B

Deuteranopia (green-blind)

#001139

Tritanopia (blue-blind)

#001821

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #100b3a;
/* rgb */ color: rgb(16, 11, 58);
/* oklch */ color: oklch(19.5% 0.086 279.6);

Tailwind

colors: {
  custom: {
    50: '#544b71',
    500: '#100b3a',
    950: '#000000',
  },
}

SCSS

$custom: #100b3a;
$custom-light: #544b71;
$custom-dark: #000000;

JSON

{
  "hex": "#100b3a",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 58
  },
  "hsl": {
    "h": 246.383,
    "s": 68.116,
    "l": 13.529
  },
  "oklch": {
    "l": 0.19543,
    "c": 0.08617,
    "h": 279.6
  },
  "luminance": 0.00655
}

Semantic roles & 50–950 ramp

primary

#100B3A

secondary

#6F772A

accent

#EB3DD8

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030107

muted

#78777A

Preview Lab

Preview with #100B3A

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

Preview Lab → · Contrast checker → · Palette generator →