#101143#101143

#101143 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.7% C 0.092 H 274.8°. Best body text is #FFFFFF at 17.75:1 contrast (WCAG AA passes).

Color values

HEX	#101143
RGB	rgb(16, 17, 67)
HSL	hsl(239, 61%, 16%)
HSV	hsv(239, 76%, 26%)
CMYK	cmyk(76.1%, 74.6%, 0%, 73.7%)
CIE-LAB	lab(8.27, 18.72, -31.68)
CIE-LCH	lch(8.27, 36.80, 300.58°)
OKLab	oklab(21.7% 0.0076 -0.0915)
OKLCH	oklch(21.7% 0.092 274.8)
XYZ	xyz(1.4269, 0.9162, 5.4107)
Luminance	0.0092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 2.34

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101143 #434210

analogous

#102B43 #101143 #291043

triadic

#101143 #431011 #114310

tetradic

#101143 #43102B #434210 #104329

square

#101143 #43102B #434210 #104329

split-complementary

#101143 #432910 #2B4310

monochromatic

#060619 #060619 #101143 #1C1E74 #282AA6

Accessibility & contrast

On white

17.75

#101143 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#101143 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101143

17.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101143	#FFFFFF	#000000	##FFFFFF
##101143	1.00	17.75	1.18	17.75
#FFFFFF	17.75	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A45

Deuteranopia (green-blind)

#001642

Tritanopia (blue-blind)

#001E28

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #101143;
/* rgb */ color: rgb(16, 17, 67);
/* oklch */ color: oklch(21.7% 0.092 274.8);

Tailwind

colors: {
  custom: {
    50: '#574f78',
    500: '#101143',
    950: '#000000',
  },
}

SCSS

$custom: #101143;
$custom-light: #574f78;
$custom-dark: #000000;

JSON

{
  "hex": "#101143",
  "rgb": {
    "r": 16,
    "g": 17,
    "b": 67
  },
  "hsl": {
    "h": 238.824,
    "s": 61.446,
    "l": 16.275
  },
  "oklch": {
    "l": 0.21697,
    "c": 0.09178,
    "h": 274.8
  },
  "luminance": 0.00916
}

Semantic roles & 50–950 ramp

primary

#101143

secondary

#7D7C32

accent

#E143E5

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030109

muted

#78777B

Preview Lab

Preview with #101143

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

Preview Lab → · Contrast checker → · Palette generator →