#183E6A#183E6A

#183E6A is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.1% C 0.088 H 254.1°. Best body text is #FFFFFF at 10.85:1 contrast (WCAG AA passes).

Color values

HEX	#183E6A
RGB	rgb(24, 62, 106)
HSL	hsl(212, 63%, 25%)
HSV	hsv(212, 77%, 42%)
CMYK	cmyk(77.4%, 41.5%, 0%, 58.4%)
CIE-LAB	lab(25.80, 3.34, -29.56)
CIE-LCH	lch(25.80, 29.75, 276.45°)
OKLab	oklab(36.1% -0.024 -0.0843)
OKLCH	oklch(36.1% 0.088 254.1)
XYZ	xyz(4.6999, 4.6795, 14.2884)
Luminance	0.0468 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E6A #6A4418

analogous

#18676A #183E6A #1B186A

triadic

#183E6A #6A183E #3E6A18

tetradic

#183E6A #6A1867 #6A4418 #186A1B

square

#183E6A #6A1867 #6A4418 #186A1B

split-complementary

#183E6A #6A1B18 #676A18

monochromatic

#060F19 #0D2138 #183E6A #235B9C #2F78CE

Accessibility & contrast

On white

10.85

#183E6A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#183E6A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E6A

10.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E6A	#FFFFFF	#000000	##FFFFFF
##183E6A	1.00	10.85	1.94	10.85
#FFFFFF	10.85	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29416C

Deuteranopia (green-blind)

#1D3A69

Tritanopia (blue-blind)

#00484E

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183e6a;
/* rgb */ color: rgb(24, 62, 106);
/* oklch */ color: oklch(36.1% 0.088 254.1);

Tailwind

colors: {
  custom: {
    50: '#617295',
    500: '#183e6a',
    950: '#000000',
  },
}

SCSS

$custom: #183e6a;
$custom-light: #617295;
$custom-dark: #000000;

JSON

{
  "hex": "#183e6a",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 106
  },
  "hsl": {
    "h": 212.195,
    "s": 63.077,
    "l": 25.49
  },
  "oklch": {
    "l": 0.36099,
    "c": 0.08767,
    "h": 254.1
  },
  "luminance": 0.0468
}

Semantic roles & 50–950 ramp

primary

#183E6A

secondary

#A0723E

accent

#9A42E6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #183E6A

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

Preview Lab → · Contrast checker → · Palette generator →