#100A43#100A43

#100A43 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.4% C 0.101 H 277.4°. Best body text is #FFFFFF at 18.32:1 contrast (WCAG AA passes).

Color values

HEX	#100A43
RGB	rgb(16, 10, 67)
HSL	hsl(246, 74%, 15%)
HSV	hsv(246, 85%, 26%)
CMYK	cmyk(76.1%, 85.1%, 0%, 73.7%)
CIE-LAB	lab(6.62, 23.16, -34.40)
CIE-LCH	lch(6.62, 41.47, 303.95°)
OKLab	oklab(20.45% 0.013 -0.0998)
OKLCH	oklch(20.45% 0.101 277.4)
XYZ	xyz(1.3350, 0.7324, 5.3801)
Luminance	0.0073 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100A43 #3D430A

analogous

#0A2043 #100A43 #2D0A43

triadic

#100A43 #43100A #0A4310

tetradic

#100A43 #430A20 #3D430A #0A432D

square

#100A43 #430A20 #3D430A #0A432D

split-complementary

#100A43 #432D0A #20430A

monochromatic

#06041B #06041B #100A43 #1D1278 #291AAE

Accessibility & contrast

On white

18.32

#100A43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#100A43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100A43

18.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100A43	#FFFFFF	#000000	##FFFFFF
##100A43	1.00	18.32	1.15	18.32
#FFFFFF	18.32	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001745

Deuteranopia (green-blind)

#001242

Tritanopia (blue-blind)

#001B26

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #100a43;
/* rgb */ color: rgb(16, 10, 67);
/* oklch */ color: oklch(20.4% 0.101 277.4);

Tailwind

colors: {
  custom: {
    50: '#574a78',
    500: '#100a43',
    950: '#000000',
  },
}

SCSS

$custom: #100a43;
$custom-light: #574a78;
$custom-dark: #000000;

JSON

{
  "hex": "#100a43",
  "rgb": {
    "r": 16,
    "g": 10,
    "b": 67
  },
  "hsl": {
    "h": 246.316,
    "s": 74.026,
    "l": 15.098
  },
  "oklch": {
    "l": 0.20447,
    "c": 0.10067,
    "h": 277.4
  },
  "luminance": 0.00732
}

Semantic roles & 50–950 ramp

primary

#100A43

secondary

#778029

accent

#F137DD

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040109

muted

#79777B

Preview Lab

Preview with #100A43

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

Preview Lab → · Contrast checker → · Palette generator →