#100F49#100F49

#100F49 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 22.0% C 0.103 H 274.6°. Best body text is #FFFFFF at 17.70:1 contrast (WCAG AA passes).

Color values

HEX	#100F49
RGB	rgb(16, 15, 73)
HSL	hsl(241, 66%, 17%)
HSV	hsv(241, 79%, 29%)
CMYK	cmyk(78.1%, 79.5%, 0%, 71.4%)
CIE-LAB	lab(8.42, 22.54, -35.66)
CIE-LCH	lch(8.42, 42.18, 302.30°)
OKLab	oklab(22% 0.0082 -0.1031)
OKLCH	oklch(22% 0.103 274.6)
XYZ	xyz(1.5867, 0.9327, 6.3984)
Luminance	0.0093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F49 #48490F

analogous

#0F2B49 #100F49 #2D0F49

triadic

#100F49 #49100F #0F4910

tetradic

#100F49 #490F2B #48490F #0F492D

square

#100F49 #490F2B #48490F #0F492D

split-complementary

#100F49 #492D0F #2B490F

monochromatic

#060519 #060519 #100F49 #1B197C #2624AF

Accessibility & contrast

On white

17.70

#100F49 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#100F49 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F49

17.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F49	#FFFFFF	#000000	##FFFFFF
##100F49	1.00	17.70	1.19	17.70
#FFFFFF	17.70	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B4B

Deuteranopia (green-blind)

#001648

Tritanopia (blue-blind)

#001F2A

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #100f49;
/* rgb */ color: rgb(16, 15, 73);
/* oklch */ color: oklch(22.0% 0.103 274.6);

Tailwind

colors: {
  custom: {
    50: '#594e7c',
    500: '#100f49',
    950: '#000000',
  },
}

SCSS

$custom: #100f49;
$custom-light: #594e7c;
$custom-dark: #000000;

JSON

{
  "hex": "#100f49",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 73
  },
  "hsl": {
    "h": 241.034,
    "s": 65.909,
    "l": 17.255
  },
  "oklch": {
    "l": 0.22003,
    "c": 0.10342,
    "h": 274.6
  },
  "luminance": 0.00933
}

Semantic roles & 50–950 ramp

primary

#100F49

secondary

#828330

accent

#E93FE6

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#040109

muted

#79777B

Preview Lab

Preview with #100F49

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

Preview Lab → · Contrast checker → · Palette generator →