#100B49#100B49

#100B49 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 21.3% C 0.108 H 275.7°. Best body text is #FFFFFF at 18.01:1 contrast (WCAG AA passes).

Color values

HEX	#100B49
RGB	rgb(16, 11, 73)
HSL	hsl(245, 74%, 16%)
HSV	hsv(245, 85%, 29%)
CMYK	cmyk(78.1%, 84.9%, 0%, 71.4%)
CIE-LAB	lab(7.50, 25.10, -37.17)
CIE-LCH	lch(7.50, 44.85, 304.04°)
OKLab	oklab(21.35% 0.0107 -0.1075)
OKLCH	oklch(21.35% 0.108 275.7)
XYZ	xyz(1.5356, 0.8304, 6.3814)
Luminance	0.0083 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100B49 #44490B

analogous

#0B2549 #100B49 #2F0B49

triadic

#100B49 #49100B #0B4910

tetradic

#100B49 #490B25 #44490B #0B492F

square

#100B49 #490B25 #44490B #0B492F

split-complementary

#100B49 #492F0B #25490B

monochromatic

#06041B #06041B #100B49 #1C137E #271BB3

Accessibility & contrast

On white

18.01

#100B49 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#100B49 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100B49

18.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100B49	#FFFFFF	#000000	##FFFFFF
##100B49	1.00	18.01	1.17	18.01
#FFFFFF	18.01	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	18.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00194B

Deuteranopia (green-blind)

#001448

Tritanopia (blue-blind)

#001D29

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #100b49;
/* rgb */ color: rgb(16, 11, 73);
/* oklch */ color: oklch(21.3% 0.108 275.7);

Tailwind

colors: {
  custom: {
    50: '#594b7d',
    500: '#100b49',
    950: '#000000',
  },
}

SCSS

$custom: #100b49;
$custom-light: #594b7d;
$custom-dark: #000000;

JSON

{
  "hex": "#100b49",
  "rgb": {
    "r": 16,
    "g": 11,
    "b": 73
  },
  "hsl": {
    "h": 244.839,
    "s": 73.81,
    "l": 16.471
  },
  "oklch": {
    "l": 0.21346,
    "c": 0.10804,
    "h": 275.7
  },
  "luminance": 0.00831
}

Semantic roles & 50–950 ramp

primary

#100B49

secondary

#7E852A

accent

#F037E2

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04010A

muted

#79777C

Preview Lab

Preview with #100B49

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

Preview Lab → · Contrast checker → · Palette generator →