#100F41#100F41

#100F41 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 21.1% C 0.091 H 276.0°. Best body text is #FFFFFF at 18.00:1 contrast (WCAG AA passes).

Color values

HEX	#100F41
RGB	rgb(16, 15, 65)
HSL	hsl(241, 63%, 16%)
HSV	hsv(241, 77%, 25%)
CMYK	cmyk(75.4%, 76.9%, 0%, 74.5%)
CIE-LAB	lab(7.53, 19.33, -31.48)
CIE-LCH	lch(7.53, 36.94, 301.54°)
OKLab	oklab(21.08% 0.0096 -0.0909)
OKLCH	oklch(21.08% 0.091 276)
XYZ	xyz(1.3383, 0.8333, 5.0903)
Luminance	0.0083 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 2.74

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F41 #40410F

analogous

#0F2741 #100F41 #290F41

triadic

#100F41 #41100F #0F4110

tetradic

#100F41 #410F27 #40410F #0F4129

square

#100F41 #410F27 #40410F #0F4129

split-complementary

#100F41 #41290F #27410F

monochromatic

#060619 #060619 #100F41 #1C1A73 #2826A4

Accessibility & contrast

On white

18.00

#100F41 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#100F41 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F41

18.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F41	#FFFFFF	#000000	##FFFFFF
##100F41	1.00	18.00	1.17	18.00
#FFFFFF	18.00	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	18.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001943

Deuteranopia (green-blind)

#001440

Tritanopia (blue-blind)

#001C26

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #100f41;
/* rgb */ color: rgb(16, 15, 65);
/* oklch */ color: oklch(21.1% 0.091 276.0);

Tailwind

colors: {
  custom: {
    50: '#564d76',
    500: '#100f41',
    950: '#000000',
  },
}

SCSS

$custom: #100f41;
$custom-light: #564d76;
$custom-dark: #000000;

JSON

{
  "hex": "#100f41",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 65
  },
  "hsl": {
    "h": 241.2,
    "s": 62.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.21084,
    "c": 0.09145,
    "h": 276
  },
  "luminance": 0.00833
}

Semantic roles & 50–950 ramp

primary

#100F41

secondary

#7A7B30

accent

#E642E2

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100F41

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

Preview Lab → · Contrast checker → · Palette generator →