#100B45#100B45

#100B45 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 20.9% C 0.102 H 276.6°. Best body text is #FFFFFF at 18.17:1 contrast (WCAG AA passes).

Color values

HEX	#100B45
RGB	rgb(16, 11, 69)
HSL	hsl(245, 73%, 16%)
HSV	hsv(245, 84%, 27%)
CMYK	cmyk(76.8%, 84.1%, 0%, 72.9%)
CIE-LAB	lab(7.04, 23.48, -35.12)
CIE-LCH	lch(7.04, 42.25, 303.76°)
OKLab	oklab(20.85% 0.0118 -0.1017)
OKLCH	oklch(20.85% 0.102 276.6)
XYZ	xyz(1.4072, 0.7790, 5.7053)
Luminance	0.0078 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B45 #40450B

analogous

#0B2345 #100B45 #2D0B45

triadic

#100B45 #45100B #0B4510

tetradic

#100B45 #450B23 #40450B #0B452D

square

#100B45 #450B23 #40450B #0B452D

split-complementary

#100B45 #452D0B #23450B

monochromatic

#06041A #06041A #100B45 #1C137A #281CAF

Accessibility & contrast

On white

18.17

#100B45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#100B45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B45

18.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B45	#FFFFFF	#000000	##FFFFFF
##100B45	1.00	18.17	1.16	18.17
#FFFFFF	18.17	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001847

Deuteranopia (green-blind)

#001344

Tritanopia (blue-blind)

#001C27

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #100b45;
/* rgb */ color: rgb(16, 11, 69);
/* oklch */ color: oklch(20.9% 0.102 276.6);

Tailwind

colors: {
  custom: {
    50: '#584b79',
    500: '#100b45',
    950: '#000000',
  },
}

SCSS

$custom: #100b45;
$custom-light: #584b79;
$custom-dark: #000000;

JSON

{
  "hex": "#100b45",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 69
  },
  "hsl": {
    "h": 245.172,
    "s": 72.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.20851,
    "c": 0.10239,
    "h": 276.6
  },
  "luminance": 0.00779
}

Semantic roles & 50–950 ramp

primary

#100B45

secondary

#7A812A

accent

#EF39DF

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040109

muted

#79777B

Preview Lab

Preview with #100B45

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

Preview Lab → · Contrast checker → · Palette generator →