#100D33#100D33

#100D33 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.2% C 0.072 H 280.7°. Best body text is #FFFFFF at 18.63:1 contrast (WCAG AA passes).

Color values

HEX	#100D33
RGB	rgb(16, 13, 51)
HSL	hsl(245, 59%, 13%)
HSV	hsv(245, 75%, 20%)
CMYK	cmyk(68.6%, 74.5%, 0%, 80%)
CIE-LAB	lab(5.75, 14.13, -24.24)
CIE-LCH	lch(5.75, 28.05, 300.23°)
OKLab	oklab(19.17% 0.0134 -0.0709)
OKLCH	oklch(19.17% 0.072 280.7)
XYZ	xyz(0.9550, 0.6370, 3.2039)
Luminance	0.0064 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#100D33 #30330D

analogous

#0D1D33 #100D33 #230D33

triadic

#100D33 #33100D #0D3310

tetradic

#100D33 #330D1D #30330D #0D3323

square

#100D33 #330D1D #30330D #0D3323

split-complementary

#100D33 #33230D #1D330D

monochromatic

#080618 #080618 #100D33 #1F1964 #2F2695

Accessibility & contrast

On white

18.63

#100D33 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#100D33 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D33

18.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100D33	#FFFFFF	#000000	##FFFFFF
##100D33	1.00	18.63	1.13	18.63
#FFFFFF	18.63	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001434

Deuteranopia (green-blind)

#001132

Tritanopia (blue-blind)

#01161E

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #100d33;
/* rgb */ color: rgb(16, 13, 51);
/* oklch */ color: oklch(19.2% 0.072 280.7);

Tailwind

colors: {
  custom: {
    50: '#524c6b',
    500: '#100d33',
    950: '#000000',
  },
}

SCSS

$custom: #100d33;
$custom-light: #524c6b;
$custom-dark: #000000;

JSON

{
  "hex": "#100d33",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 51
  },
  "hsl": {
    "h": 244.737,
    "s": 59.375,
    "l": 12.549
  },
  "oklch": {
    "l": 0.19169,
    "c": 0.07217,
    "h": 280.7
  },
  "luminance": 0.00637
}

Semantic roles & 50–950 ramp

primary

#100D33

secondary

#696E2E

accent

#E345D6

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020106

muted

#78777A

Preview Lab

Preview with #100D33

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

Preview Lab → · Contrast checker → · Palette generator →