#183B6A#183B6A

#183B6A is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.3% C 0.091 H 256.7°. Best body text is #FFFFFF at 11.21:1 contrast (WCAG AA passes).

Color values

HEX	#183B6A
RGB	rgb(24, 59, 106)
HSL	hsl(214, 63%, 25%)
HSV	hsv(214, 77%, 42%)
CMYK	cmyk(77.4%, 44.3%, 0%, 58.4%)
CIE-LAB	lab(24.83, 5.42, -31.10)
CIE-LCH	lch(24.83, 31.57, 279.89°)
OKLab	oklab(35.35% -0.021 -0.0889)
OKLCH	oklch(35.35% 0.091 256.7)
XYZ	xyz(4.5412, 4.3622, 14.2355)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B6A #6A4718

analogous

#18646A #183B6A #1E186A

triadic

#183B6A #6A183B #3B6A18

tetradic

#183B6A #6A1864 #6A4718 #186A1E

square

#183B6A #6A1864 #6A4718 #186A1E

split-complementary

#183B6A #6A1E18 #646A18

monochromatic

#060E19 #0D1F38 #183B6A #23579C #2F73CE

Accessibility & contrast

On white

11.21

#183B6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#183B6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B6A

11.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B6A	#FFFFFF	#000000	##FFFFFF
##183B6A	1.00	11.21	1.87	11.21
#FFFFFF	11.21	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#243F6C

Deuteranopia (green-blind)

#163769

Tritanopia (blue-blind)

#00464D

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183b6a;
/* rgb */ color: rgb(24, 59, 106);
/* oklch */ color: oklch(35.3% 0.091 256.7);

Tailwind

colors: {
  custom: {
    50: '#617095',
    500: '#183b6a',
    950: '#000000',
  },
}

SCSS

$custom: #183b6a;
$custom-light: #617095;
$custom-dark: #000000;

JSON

{
  "hex": "#183b6a",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 106
  },
  "hsl": {
    "h": 214.39,
    "s": 63.077,
    "l": 25.49
  },
  "oklch": {
    "l": 0.35347,
    "c": 0.09134,
    "h": 256.7
  },
  "luminance": 0.04363
}

Semantic roles & 50–950 ramp

primary

#183B6A

secondary

#A0763E

accent

#A042E6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #183B6A

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

Preview Lab → · Contrast checker → · Palette generator →