#100F45#100F45

#100F45 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.5% C 0.098 H 275.3°. Best body text is #FFFFFF at 17.85:1 contrast (WCAG AA passes).

Color values

HEX	#100F45
RGB	rgb(16, 15, 69)
HSL	hsl(241, 64%, 16%)
HSV	hsv(241, 78%, 27%)
CMYK	cmyk(76.8%, 78.3%, 0%, 72.9%)
CIE-LAB	lab(7.96, 20.96, -33.60)
CIE-LCH	lch(7.96, 39.61, 301.96°)
OKLab	oklab(21.54% 0.0089 -0.0971)
OKLCH	oklch(21.54% 0.098 275.3)
XYZ	xyz(1.4583, 0.8813, 5.7223)
Luminance	0.0088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F45 #44450F

analogous

#0F2945 #100F45 #2B0F45

triadic

#100F45 #45100F #0F4510

tetradic

#100F45 #450F29 #44450F #0F452B

square

#100F45 #450F29 #44450F #0F452B

split-complementary

#100F45 #452B0F #29450F

monochromatic

#060519 #060519 #100F45 #1C1A77 #2725AA

Accessibility & contrast

On white

17.85

#100F45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#100F45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F45

17.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F45	#FFFFFF	#000000	##FFFFFF
##100F45	1.00	17.85	1.18	17.85
#FFFFFF	17.85	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A47

Deuteranopia (green-blind)

#001544

Tritanopia (blue-blind)

#001E28

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #100f45;
/* rgb */ color: rgb(16, 15, 69);
/* oklch */ color: oklch(21.5% 0.098 275.3);

Tailwind

colors: {
  custom: {
    50: '#574d79',
    500: '#100f45',
    950: '#000000',
  },
}

SCSS

$custom: #100f45;
$custom-light: #574d79;
$custom-dark: #000000;

JSON

{
  "hex": "#100f45",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 69
  },
  "hsl": {
    "h": 241.111,
    "s": 64.286,
    "l": 16.471
  },
  "oklch": {
    "l": 0.21538,
    "c": 0.0975,
    "h": 275.3
  },
  "luminance": 0.00881
}

Semantic roles & 50–950 ramp

primary

#100F45

secondary

#7E7F30

accent

#E741E4

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040109

muted

#79777B

Preview Lab

Preview with #100F45

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

Preview Lab → · Contrast checker → · Palette generator →