#101243#101243

#101243 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.9% C 0.090 H 274.3°. Best body text is #FFFFFF at 17.65:1 contrast (WCAG AA passes).

Color values

HEX	#101243
RGB	rgb(16, 18, 67)
HSL	hsl(238, 61%, 16%)
HSV	hsv(238, 76%, 26%)
CMYK	cmyk(76.1%, 73.1%, 0%, 73.7%)
CIE-LAB	lab(8.55, 17.98, -31.23)
CIE-LCH	lch(8.55, 36.03, 299.94°)
OKLab	oklab(21.9% 0.0067 -0.0901)
OKLCH	oklch(21.9% 0.09 274.3)
XYZ	xyz(1.4428, 0.9479, 5.4160)
Luminance	0.0095 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#101243 #434110

analogous

#102C43 #101243 #281043

triadic

#101243 #431012 #124310

tetradic

#101243 #43102C #434110 #104328

square

#101243 #43102C #434110 #104328

split-complementary

#101243 #432810 #2C4310

monochromatic

#060719 #060719 #101243 #1C1F74 #282DA6

Accessibility & contrast

On white

17.65

#101243 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#101243 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101243

17.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##101243	#FFFFFF	#000000	##FFFFFF
##101243	1.00	17.65	1.19	17.65
#FFFFFF	17.65	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B45

Deuteranopia (green-blind)

#001642

Tritanopia (blue-blind)

#001F28

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #101243;
/* rgb */ color: rgb(16, 18, 67);
/* oklch */ color: oklch(21.9% 0.090 274.3);

Tailwind

colors: {
  custom: {
    50: '#574f78',
    500: '#101243',
    950: '#000000',
  },
}

SCSS

$custom: #101243;
$custom-light: #574f78;
$custom-dark: #000000;

JSON

{
  "hex": "#101243",
  "rgb": {
    "r": 16,
    "g": 18,
    "b": 67
  },
  "hsl": {
    "h": 237.647,
    "s": 61.446,
    "l": 16.275
  },
  "oklch": {
    "l": 0.21898,
    "c": 0.09038,
    "h": 274.3
  },
  "luminance": 0.00948
}

Semantic roles & 50–950 ramp

primary

#101243

secondary

#7D7A32

accent

#DE43E5

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030209

muted

#78787B

Preview Lab

Preview with #101243

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

Preview Lab → · Contrast checker → · Palette generator →