#101640#101640

#101640 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.5% C 0.080 H 272.2°. Best body text is #FFFFFF at 17.34:1 contrast (WCAG AA passes).

Color values

HEX	#101640
RGB	rgb(16, 22, 64)
HSL	hsl(233, 60%, 16%)
HSV	hsv(233, 75%, 25%)
CMYK	cmyk(75%, 65.6%, 0%, 74.9%)
CIE-LAB	lab(9.43, 13.68, -27.66)
CIE-LCH	lch(9.43, 30.86, 296.32°)
OKLab	oklab(22.46% 0.003 -0.0796)
OKLCH	oklch(22.46% 0.08 272.2)
XYZ	xyz(1.4257, 1.0540, 4.9778)
Luminance	0.0105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101640 #403A10

analogous

#102E40 #101640 #221040

triadic

#101640 #401016 #164010

tetradic

#101640 #40102E #403A10 #104022

square

#101640 #40102E #403A10 #104022

split-complementary

#101640 #402210 #2E4010

monochromatic

#060818 #060818 #101640 #1C2771 #2838A2

Accessibility & contrast

On white

17.34

#101640 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#101640 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101640

17.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101640	#FFFFFF	#000000	##FFFFFF
##101640	1.00	17.34	1.21	17.34
#FFFFFF	17.34	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D41

Deuteranopia (green-blind)

#00183F

Tritanopia (blue-blind)

#002028

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #101640;
/* rgb */ color: rgb(16, 22, 64);
/* oklch */ color: oklch(22.5% 0.080 272.2);

Tailwind

colors: {
  custom: {
    50: '#555275',
    500: '#101640',
    950: '#000000',
  },
}

SCSS

$custom: #101640;
$custom-light: #555275;
$custom-dark: #000000;

JSON

{
  "hex": "#101640",
  "rgb": {
    "r": 16,
    "g": 22,
    "b": 64
  },
  "hsl": {
    "h": 232.5,
    "s": 60,
    "l": 15.686
  },
  "oklch": {
    "l": 0.22459,
    "c": 0.07969,
    "h": 272.2
  },
  "luminance": 0.01054
}

Semantic roles & 50–950 ramp

primary

#101640

secondary

#7A7132

accent

#CF45E3

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #101640

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

Preview Lab → · Contrast checker → · Palette generator →