#100A33#100A33

#100A33 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.6% C 0.077 H 282.6°. Best body text is #FFFFFF at 18.86:1 contrast (WCAG AA passes).

Color values

HEX	#100A33
RGB	rgb(16, 10, 51)
HSL	hsl(249, 67%, 12%)
HSV	hsv(249, 80%, 20%)
CMYK	cmyk(68.6%, 80.4%, 0%, 80%)
CIE-LAB	lab(5.11, 15.53, -25.27)
CIE-LCH	lch(5.11, 29.66, 301.58°)
OKLab	oklab(18.57% 0.0168 -0.0749)
OKLCH	oklch(18.57% 0.077 282.6)
XYZ	xyz(0.9196, 0.5662, 3.1922)
Luminance	0.0057 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight

#03012D

ΔE00 3.03

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100A33 #2D330A

analogous

#0A1933 #100A33 #250A33

triadic

#100A33 #33100A #0A3310

tetradic

#100A33 #330A19 #2D330A #0A3325

square

#100A33 #330A19 #2D330A #0A3325

split-complementary

#100A33 #33250A #19330A

monochromatic

#08051A #08051A #100A33 #201466 #301E99

Accessibility & contrast

On white

18.86

#100A33 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#100A33 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100A33

18.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100A33	#FFFFFF	#000000	##FFFFFF
##100A33	1.00	18.86	1.11	18.86
#FFFFFF	18.86	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001234

Deuteranopia (green-blind)

#001032

Tritanopia (blue-blind)

#01151D

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #100a33;
/* rgb */ color: rgb(16, 10, 51);
/* oklch */ color: oklch(18.6% 0.077 282.6);

Tailwind

colors: {
  custom: {
    50: '#524a6b',
    500: '#100a33',
    950: '#000000',
  },
}

SCSS

$custom: #100a33;
$custom-light: #524a6b;
$custom-dark: #000000;

JSON

{
  "hex": "#100a33",
  "rgb": {
    "r": 16,
    "g": 10,
    "b": 51
  },
  "hsl": {
    "h": 248.78,
    "s": 67.213,
    "l": 11.961
  },
  "oklch": {
    "l": 0.18569,
    "c": 0.07674,
    "h": 282.6
  },
  "luminance": 0.00566
}

Semantic roles & 50–950 ramp

primary

#100A33

secondary

#667028

accent

#EA3ED1

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020106

muted

#78777A

Preview Lab

Preview with #100A33

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

Preview Lab → · Contrast checker → · Palette generator →