#183E72#183E72

#183E72 is a dark, moderate cyan. Relative luminance 0.049; OKLCH L 36.7% C 0.099 H 257.2°. Best body text is #FFFFFF at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#183E72
RGB	rgb(24, 62, 114)
HSL	hsl(215, 65%, 27%)
HSV	hsv(215, 79%, 45%)
CMYK	cmyk(78.9%, 45.6%, 0%, 55.3%)
CIE-LAB	lab(26.31, 6.64, -33.85)
CIE-LCH	lch(26.31, 34.49, 281.09°)
OKLab	oklab(36.66% -0.0221 -0.0969)
OKLCH	oklch(36.66% 0.099 257.2)
XYZ	xyz(5.1355, 4.8538, 16.5825)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E72 #724C18

analogous

#186B72 #183E72 #1F1872

triadic

#183E72 #72183E #3E7218

tetradic

#183E72 #72186B #724C18 #18721F

square

#183E72 #72186B #724C18 #18721F

split-complementary

#183E72 #721F18 #6B7218

monochromatic

#050E19 #0D233F #183E72 #2359A5 #3176D4

Accessibility & contrast

On white

10.66

#183E72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#183E72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E72

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E72	#FFFFFF	#000000	##FFFFFF
##183E72	1.00	10.66	1.97	10.66
#FFFFFF	10.66	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244374

Deuteranopia (green-blind)

#133A71

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #183e72;
/* rgb */ color: rgb(24, 62, 114);
/* oklch */ color: oklch(36.7% 0.099 257.2);

Tailwind

colors: {
  custom: {
    50: '#63729b',
    500: '#183e72',
    950: '#000000',
  },
}

SCSS

$custom: #183e72;
$custom-light: #63729b;
$custom-dark: #000000;

JSON

{
  "hex": "#183e72",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 114
  },
  "hsl": {
    "h": 214.667,
    "s": 65.217,
    "l": 27.059
  },
  "oklch": {
    "l": 0.36663,
    "c": 0.0994,
    "h": 257.2
  },
  "luminance": 0.04854
}

Semantic roles & 50–950 ramp

primary

#183E72

secondary

#A77B3E

accent

#A140E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #183E72

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

Preview Lab → · Contrast checker → · Palette generator →