#183D65#183D65

#183D65 is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.5% C 0.082 H 252.6°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#183D65
RGB	rgb(24, 61, 101)
HSL	hsl(211, 62%, 25%)
HSV	hsv(211, 76%, 40%)
CMYK	cmyk(76.2%, 39.6%, 0%, 60.4%)
CIE-LAB	lab(25.17, 1.98, -27.35)
CIE-LCH	lch(25.17, 27.42, 274.15°)
OKLab	oklab(35.51% -0.0243 -0.0778)
OKLCH	oklch(35.51% 0.082 252.6)
XYZ	xyz(4.3935, 4.4708, 12.9408)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D65 #654018

analogous

#186465 #183D65 #1A1865

triadic

#183D65 #65183D #3D6518

tetradic

#183D65 #651864 #654018 #18651A

square

#183D65 #651864 #654018 #18651A

split-complementary

#183D65 #651A18 #646518

monochromatic

#060F19 #0C1F34 #183D65 #245B96 #3079C8

Accessibility & contrast

On white

11.09

#183D65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#183D65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D65

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D65	#FFFFFF	#000000	##FFFFFF
##183D65	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B4067

Deuteranopia (green-blind)

#1F3864

Tritanopia (blue-blind)

#00464C

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #183d65;
/* rgb */ color: rgb(24, 61, 101);
/* oklch */ color: oklch(35.5% 0.082 252.6);

Tailwind

colors: {
  custom: {
    50: '#607291',
    500: '#183d65',
    950: '#000000',
  },
}

SCSS

$custom: #183d65;
$custom-light: #607291;
$custom-dark: #000000;

JSON

{
  "hex": "#183d65",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 101
  },
  "hsl": {
    "h": 211.169,
    "s": 61.6,
    "l": 24.51
  },
  "oklch": {
    "l": 0.35507,
    "c": 0.08157,
    "h": 252.6
  },
  "luminance": 0.04471
}

Semantic roles & 50–950 ramp

primary

#183D65

secondary

#9B6E3E

accent

#9743E5

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#05070D

muted

#7A7A7D

Preview Lab

Preview with #183D65

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

Preview Lab → · Contrast checker → · Palette generator →