#100840#100840

#100840 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.8% C 0.099 H 278.9°. Best body text is #FFFFFF at 18.57:1 contrast (WCAG AA passes).

Color values

HEX	#100840
RGB	rgb(16, 8, 64)
HSL	hsl(249, 78%, 14%)
HSV	hsv(249, 88%, 25%)
CMYK	cmyk(75%, 87.5%, 0%, 74.9%)
CIE-LAB	lab(5.91, 22.82, -33.42)
CIE-LCH	lch(5.91, 40.47, 304.33°)
OKLab	oklab(19.75% 0.0152 -0.0976)
OKLCH	oklch(19.75% 0.099 278.9)
XYZ	xyz(1.2256, 0.6539, 4.9111)
Luminance	0.0065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 2.90

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100840 #384008

analogous

#081C40 #100840 #2C0840

triadic

#100840 #401008 #084010

tetradic

#100840 #40081C #384008 #08402C

square

#100840 #40081C #384008 #08402C

split-complementary

#100840 #402C08 #1C4008

monochromatic

#07031B #07031B #100840 #1E0F76 #2B16AD

Accessibility & contrast

On white

18.57

#100840 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#100840 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100840

18.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100840	#FFFFFF	#000000	##FFFFFF
##100840	1.00	18.57	1.13	18.57
#FFFFFF	18.57	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001542

Deuteranopia (green-blind)

#00113F

Tritanopia (blue-blind)

#001824

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #100840;
/* rgb */ color: rgb(16, 8, 64);
/* oklch */ color: oklch(19.8% 0.099 278.9);

Tailwind

colors: {
  custom: {
    50: '#564975',
    500: '#100840',
    950: '#000000',
  },
}

SCSS

$custom: #100840;
$custom-light: #564975;
$custom-dark: #000000;

JSON

{
  "hex": "#100840",
  "rgb": {
    "r": 16,
    "g": 8,
    "b": 64
  },
  "hsl": {
    "h": 248.571,
    "s": 77.778,
    "l": 14.118
  },
  "oklch": {
    "l": 0.1975,
    "c": 0.09877,
    "h": 278.9
  },
  "luminance": 0.00654
}

Semantic roles & 50–950 ramp

primary

#100840

secondary

#727E25

accent

#F434D9

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100840

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

Preview Lab → · Contrast checker → · Palette generator →