#101840#101840

#101840 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.9% C 0.077 H 270.7°. Best body text is #FFFFFF at 17.12:1 contrast (WCAG AA passes).

Color values

HEX	#101840
RGB	rgb(16, 24, 64)
HSL	hsl(230, 60%, 16%)
HSV	hsv(230, 75%, 25%)
CMYK	cmyk(75%, 62.5%, 0%, 74.9%)
CIE-LAB	lab(10.06, 12.13, -26.65)
CIE-LCH	lch(10.06, 29.28, 294.47°)
OKLab	oklab(22.93% 0.0009 -0.0766)
OKLCH	oklch(22.93% 0.077 270.7)
XYZ	xyz(1.4654, 1.1335, 4.9910)
Luminance	0.0113 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101840 #403810

analogous

#103040 #101840 #201040

triadic

#101840 #401018 #184010

tetradic

#101840 #401030 #403810 #104020

square

#101840 #401030 #403810 #104020

split-complementary

#101840 #402010 #304010

monochromatic

#060918 #060918 #101840 #1C2A71 #283DA2

Accessibility & contrast

On white

17.12

#101840 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#101840 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101840

17.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101840	#FFFFFF	#000000	##FFFFFF
##101840	1.00	17.12	1.23	17.12
#FFFFFF	17.12	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E41

Deuteranopia (green-blind)

#001A3F

Tritanopia (blue-blind)

#002229

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #101840;
/* rgb */ color: rgb(16, 24, 64);
/* oklch */ color: oklch(22.9% 0.077 270.7);

Tailwind

colors: {
  custom: {
    50: '#555475',
    500: '#101840',
    950: '#000000',
  },
}

SCSS

$custom: #101840;
$custom-light: #555475;
$custom-dark: #000000;

JSON

{
  "hex": "#101840",
  "rgb": {
    "r": 16,
    "g": 24,
    "b": 64
  },
  "hsl": {
    "h": 230,
    "s": 60,
    "l": 15.686
  },
  "oklch": {
    "l": 0.22925,
    "c": 0.07662,
    "h": 270.7
  },
  "luminance": 0.01134
}

Semantic roles & 50–950 ramp

primary

#101840

secondary

#7A6E32

accent

#C945E3

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #101840

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

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