#183E73#183E73

#183E73 is a dark, moderate cyan. Relative luminance 0.049; OKLCH L 36.7% C 0.101 H 257.5°. Best body text is #FFFFFF at 10.63:1 contrast (WCAG AA passes).

Color values

HEX	#183E73
RGB	rgb(24, 62, 115)
HSL	hsl(215, 65%, 27%)
HSV	hsv(215, 79%, 45%)
CMYK	cmyk(79.1%, 46.1%, 0%, 54.9%)
CIE-LAB	lab(26.38, 7.05, -34.38)
CIE-LCH	lch(26.38, 35.09, 281.59°)
OKLab	oklab(36.74% -0.0219 -0.0985)
OKLCH	oklch(36.74% 0.101 257.5)
XYZ	xyz(5.1927, 4.8767, 16.8839)
Luminance	0.0488 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E73 #734D18

analogous

#186C73 #183E73 #1F1873

triadic

#183E73 #73183E #3E7318

tetradic

#183E73 #73186C #734D18 #18731F

square

#183E73 #73186C #734D18 #18731F

split-complementary

#183E73 #731F18 #6C7318

monochromatic

#050E19 #0D2340 #183E73 #2359A6 #3175D4

Accessibility & contrast

On white

10.63

#183E73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#183E73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E73

10.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E73	#FFFFFF	#000000	##FFFFFF
##183E73	1.00	10.63	1.98	10.63
#FFFFFF	10.63	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234375

Deuteranopia (green-blind)

#113B72

Tritanopia (blue-blind)

#004B53

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #183e73;
/* rgb */ color: rgb(24, 62, 115);
/* oklch */ color: oklch(36.7% 0.101 257.5);

Tailwind

colors: {
  custom: {
    50: '#63729c',
    500: '#183e73',
    950: '#000000',
  },
}

SCSS

$custom: #183e73;
$custom-light: #63729c;
$custom-dark: #000000;

JSON

{
  "hex": "#183e73",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 115
  },
  "hsl": {
    "h": 214.945,
    "s": 65.468,
    "l": 27.255
  },
  "oklch": {
    "l": 0.36736,
    "c": 0.10087,
    "h": 257.5
  },
  "luminance": 0.04877
}

Semantic roles & 50–950 ramp

primary

#183E73

secondary

#A87C3F

accent

#A23FE8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #183E73

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

Preview Lab → · Contrast checker → · Palette generator →