#183B65#183B65

#183B65 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.0% C 0.084 H 254.7°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#183B65
RGB	rgb(24, 59, 101)
HSL	hsl(213, 62%, 25%)
HSV	hsv(213, 76%, 40%)
CMYK	cmyk(76.2%, 41.6%, 0%, 60.4%)
CIE-LAB	lab(24.52, 3.37, -28.39)
CIE-LCH	lch(24.52, 28.59, 276.76°)
OKLab	oklab(35% -0.0222 -0.0809)
OKLCH	oklch(35% 0.084 254.7)
XYZ	xyz(4.2888, 4.2612, 12.9059)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B65 #654218

analogous

#186265 #183B65 #1B1865

triadic

#183B65 #65183B #3B6518

tetradic

#183B65 #651862 #654218 #18651B

square

#183B65 #651862 #654218 #18651B

split-complementary

#183B65 #651B18 #626518

monochromatic

#060E19 #0C1E34 #183B65 #245896 #3075C8

Accessibility & contrast

On white

11.34

#183B65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#183B65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B65

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B65	#FFFFFF	#000000	##FFFFFF
##183B65	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283E67

Deuteranopia (green-blind)

#1C3764

Tritanopia (blue-blind)

#00454B

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183b65;
/* rgb */ color: rgb(24, 59, 101);
/* oklch */ color: oklch(35.0% 0.084 254.7);

Tailwind

colors: {
  custom: {
    50: '#607091',
    500: '#183b65',
    950: '#000000',
  },
}

SCSS

$custom: #183b65;
$custom-light: #607091;
$custom-dark: #000000;

JSON

{
  "hex": "#183b65",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 101
  },
  "hsl": {
    "h": 212.727,
    "s": 61.6,
    "l": 24.51
  },
  "oklch": {
    "l": 0.34997,
    "c": 0.08392,
    "h": 254.7
  },
  "luminance": 0.04262
}

Semantic roles & 50–950 ramp

primary

#183B65

secondary

#9B713E

accent

#9B43E5

background

#F6F6F8

surface

#EBECF0

border

#C6C7CB

text

#05070D

muted

#7A7A7D

Preview Lab

Preview with #183B65

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

Preview Lab → · Contrast checker → · Palette generator →