#100F40#100F40

#100F40 is a very dark, moderate blue. Relative luminance 0.008; OKLCH L 21.0% C 0.090 H 276.2°. Best body text is #FFFFFF at 18.04:1 contrast (WCAG AA passes).

Color values

HEX	#100F40
RGB	rgb(16, 15, 64)
HSL	hsl(241, 62%, 15%)
HSV	hsv(241, 77%, 25%)
CMYK	cmyk(75%, 76.6%, 0%, 74.9%)
CIE-LAB	lab(7.42, 18.90, -30.94)
CIE-LCH	lch(7.42, 36.26, 301.42°)
OKLab	oklab(20.97% 0.0098 -0.0894)
OKLCH	oklch(20.97% 0.09 276.2)
XYZ	xyz(1.3096, 0.8219, 4.9391)
Luminance	0.0082 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 2.83

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100F40 #3F400F

analogous

#0F2640 #100F40 #280F40

triadic

#100F40 #40100F #0F4010

tetradic

#100F40 #400F26 #3F400F #0F4028

square

#100F40 #400F26 #3F400F #0F4028

split-complementary

#100F40 #40280F #26400F

monochromatic

#060619 #060619 #100F40 #1C1B72 #2926A3

Accessibility & contrast

On white

18.04

#100F40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#100F40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F40

18.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100F40	#FFFFFF	#000000	##FFFFFF
##100F40	1.00	18.04	1.16	18.04
#FFFFFF	18.04	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001942

Deuteranopia (green-blind)

#00143F

Tritanopia (blue-blind)

#001C25

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #100f40;
/* rgb */ color: rgb(16, 15, 64);
/* oklch */ color: oklch(21.0% 0.090 276.2);

Tailwind

colors: {
  custom: {
    50: '#564d75',
    500: '#100f40',
    950: '#000000',
  },
}

SCSS

$custom: #100f40;
$custom-light: #564d75;
$custom-dark: #000000;

JSON

{
  "hex": "#100f40",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 64
  },
  "hsl": {
    "h": 241.224,
    "s": 62.025,
    "l": 15.49
  },
  "oklch": {
    "l": 0.20973,
    "c": 0.08991,
    "h": 276.2
  },
  "luminance": 0.00822
}

Semantic roles & 50–950 ramp

primary

#100F40

secondary

#797A30

accent

#E543E2

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100F40

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

Preview Lab → · Contrast checker → · Palette generator →