#100F43#100F43

#100F43 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.3% C 0.094 H 275.6°. Best body text is #FFFFFF at 17.93:1 contrast (WCAG AA passes).

Color values

HEX	#100F43
RGB	rgb(16, 15, 67)
HSL	hsl(241, 63%, 16%)
HSV	hsv(241, 78%, 26%)
CMYK	cmyk(76.1%, 77.6%, 0%, 73.7%)
CIE-LAB	lab(7.74, 20.16, -32.55)
CIE-LCH	lch(7.74, 38.29, 301.77°)
OKLab	oklab(21.31% 0.0093 -0.094)
OKLCH	oklch(21.31% 0.094 275.6)
XYZ	xyz(1.3973, 0.8569, 5.4009)
Luminance	0.0086 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 2.61

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F43 #42430F

analogous

#0F2843 #100F43 #2A0F43

triadic

#100F43 #43100F #0F4310

tetradic

#100F43 #430F28 #42430F #0F432A

square

#100F43 #430F28 #42430F #0F432A

split-complementary

#100F43 #432A0F #28430F

monochromatic

#060619 #060619 #100F43 #1C1A75 #2825A7

Accessibility & contrast

On white

17.93

#100F43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#100F43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F43

17.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F43	#FFFFFF	#000000	##FFFFFF
##100F43	1.00	17.93	1.17	17.93
#FFFFFF	17.93	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001945

Deuteranopia (green-blind)

#001542

Tritanopia (blue-blind)

#001D27

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #100f43;
/* rgb */ color: rgb(16, 15, 67);
/* oklch */ color: oklch(21.3% 0.094 275.6);

Tailwind

colors: {
  custom: {
    50: '#574d78',
    500: '#100f43',
    950: '#000000',
  },
}

SCSS

$custom: #100f43;
$custom-light: #574d78;
$custom-dark: #000000;

JSON

{
  "hex": "#100f43",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 67
  },
  "hsl": {
    "h": 241.154,
    "s": 63.415,
    "l": 16.078
  },
  "oklch": {
    "l": 0.2131,
    "c": 0.09449,
    "h": 275.6
  },
  "luminance": 0.00857
}

Semantic roles & 50–950 ramp

primary

#100F43

secondary

#7C7D30

accent

#E641E3

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030109

muted

#78777B

Preview Lab

Preview with #100F43

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

Preview Lab → · Contrast checker → · Palette generator →