#11183B#11183B

#11183B is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.5% C 0.068 H 271.4°. Best body text is #FFFFFF at 17.25:1 contrast (WCAG AA passes).

Color values

HEX	#11183B
RGB	rgb(17, 24, 59)
HSL	hsl(230, 55%, 15%)
HSV	hsv(230, 71%, 23%)
CMYK	cmyk(71.2%, 59.3%, 0%, 76.9%)
CIE-LAB	lab(9.70, 10.20, -23.66)
CIE-LCH	lch(9.70, 25.77, 293.32°)
OKLab	oklab(22.54% 0.0017 -0.0678)
OKLCH	oklch(22.54% 0.068 271.4)
XYZ	xyz(1.3470, 1.0881, 4.2759)
Luminance	0.0109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#11183B #3B3411

analogous

#112D3B #11183B #1F113B

triadic

#11183B #3B1118 #183B11

tetradic

#11183B #3B112D #3B3411 #113B1F

square

#11183B #3B112D #3B3411 #113B1F

split-complementary

#11183B #3B1F11 #2D3B11

monochromatic

#070A18 #070A18 #11183B #1F2B6B #2C3F9A

Accessibility & contrast

On white

17.25

#11183B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#11183B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #11183B

17.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##11183B	#FFFFFF	#000000	##FFFFFF
##11183B	1.00	17.25	1.22	17.25
#FFFFFF	17.25	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#051D3C

Deuteranopia (green-blind)

#00193A

Tritanopia (blue-blind)

#002026

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #11183b;
/* rgb */ color: rgb(17, 24, 59);
/* oklch */ color: oklch(22.5% 0.068 271.4);

Tailwind

colors: {
  custom: {
    50: '#545471',
    500: '#11183b',
    950: '#000000',
  },
}

SCSS

$custom: #11183b;
$custom-light: #545471;
$custom-dark: #000000;

JSON

{
  "hex": "#11183b",
  "rgb": {
    "r": 17,
    "g": 24,
    "b": 59
  },
  "hsl": {
    "h": 230,
    "s": 55.263,
    "l": 14.902
  },
  "oklch": {
    "l": 0.22544,
    "c": 0.06782,
    "h": 271.4
  },
  "luminance": 0.01088
}

Semantic roles & 50–950 ramp

primary

#11183B

secondary

#746A33

accent

#C649DF

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030207

muted

#78787A

Preview Lab

Preview with #11183B

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

Preview Lab → · Contrast checker → · Palette generator →