#100B3F#100B3F

#100B3F is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.1% C 0.094 H 278.1°. Best body text is #FFFFFF at 18.40:1 contrast (WCAG AA passes).

Color values

HEX	#100B3F
RGB	rgb(16, 11, 63)
HSL	hsl(246, 70%, 15%)
HSV	hsv(246, 83%, 25%)
CMYK	cmyk(74.6%, 82.5%, 0%, 75.3%)
CIE-LAB	lab(6.40, 20.85, -31.90)
CIE-LCH	lch(6.40, 38.12, 303.17°)
OKLab	oklab(20.13% 0.0133 -0.0927)
OKLCH	oklch(20.13% 0.094 278.1)
XYZ	xyz(1.2303, 0.7083, 4.7735)
Luminance	0.0071 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B3F #3A3F0B

analogous

#0B203F #100B3F #2A0B3F

triadic

#100B3F #3F100B #0B3F10

tetradic

#100B3F #3F0B20 #3A3F0B #0B3F2A

square

#100B3F #3F0B20 #3A3F0B #0B3F2A

split-complementary

#100B3F #3F2A0B #203F0B

monochromatic

#07051A #07051A #100B3F #1D1473 #2A1DA7

Accessibility & contrast

On white

18.40

#100B3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#100B3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B3F

18.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B3F	#FFFFFF	#000000	##FFFFFF
##100B3F	1.00	18.40	1.14	18.40
#FFFFFF	18.40	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001641

Deuteranopia (green-blind)

#00123E

Tritanopia (blue-blind)

#001A24

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #100b3f;
/* rgb */ color: rgb(16, 11, 63);
/* oklch */ color: oklch(20.1% 0.094 278.1);

Tailwind

colors: {
  custom: {
    50: '#564b75',
    500: '#100b3f',
    950: '#000000',
  },
}

SCSS

$custom: #100b3f;
$custom-light: #564b75;
$custom-dark: #000000;

JSON

{
  "hex": "#100b3f",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 63
  },
  "hsl": {
    "h": 245.769,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.20126,
    "c": 0.09366,
    "h": 278.1
  },
  "luminance": 0.00708
}

Semantic roles & 50–950 ramp

primary

#100B3F

secondary

#747C2A

accent

#ED3BDC

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100B3F

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

Preview Lab → · Contrast checker → · Palette generator →