#100C3F#100C3F

#100C3F is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.3% C 0.092 H 277.8°. Best body text is #FFFFFF at 18.32:1 contrast (WCAG AA passes).

Color values

HEX	#100C3F
RGB	rgb(16, 12, 63)
HSL	hsl(245, 68%, 15%)
HSV	hsv(245, 81%, 25%)
CMYK	cmyk(74.6%, 81%, 0%, 75.3%)
CIE-LAB	lab(6.61, 20.31, -31.56)
CIE-LCH	lch(6.61, 37.53, 302.77°)
OKLab	oklab(20.3% 0.0125 -0.0916)
OKLCH	oklch(20.3% 0.092 277.8)
XYZ	xyz(1.2421, 0.7319, 4.7775)
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

#100C3F #3B3F0C

analogous

#0C223F #100C3F #2A0C3F

triadic

#100C3F #3F100C #0C3F10

tetradic

#100C3F #3F0C22 #3B3F0C #0C3F2A

square

#100C3F #3F0C22 #3B3F0C #0C3F2A

split-complementary

#100C3F #3F2A0C #223F0C

monochromatic

#07051A #07051A #100C3F #1D1672 #2A20A6

Accessibility & contrast

On white

18.32

#100C3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#100C3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100C3F

18.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##100C3F	#FFFFFF	#000000	##FFFFFF
##100C3F	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)

#001741

Deuteranopia (green-blind)

#00133E

Tritanopia (blue-blind)

#001A24

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #100c3f;
/* rgb */ color: rgb(16, 12, 63);
/* oklch */ color: oklch(20.3% 0.092 277.8);

Tailwind

colors: {
  custom: {
    50: '#564b75',
    500: '#100c3f',
    950: '#000000',
  },
}

SCSS

$custom: #100c3f;
$custom-light: #564b75;
$custom-dark: #000000;

JSON

{
  "hex": "#100c3f",
  "rgb": {
    "r": 16,
    "g": 12,
    "b": 63
  },
  "hsl": {
    "h": 244.706,
    "s": 68,
    "l": 14.706
  },
  "oklch": {
    "l": 0.20301,
    "c": 0.0924,
    "h": 277.8
  },
  "luminance": 0.00732
}

Semantic roles & 50–950 ramp

primary

#100C3F

secondary

#757B2C

accent

#EB3DDD

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #100C3F

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

Preview Lab → · Contrast checker → · Palette generator →