#183A68#183A68

#183A68 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 35.0% C 0.090 H 256.8°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX	#183A68
RGB	rgb(24, 58, 104)
HSL	hsl(215, 63%, 25%)
HSV	hsv(215, 77%, 41%)
CMYK	cmyk(76.9%, 44.2%, 0%, 59.2%)
CIE-LAB	lab(24.38, 5.29, -30.54)
CIE-LCH	lch(24.38, 30.99, 279.84°)
OKLab	oklab(34.96% -0.0204 -0.0872)
OKLCH	oklch(34.96% 0.09 256.8)
XYZ	xyz(4.3875, 4.2193, 13.6772)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A68 #684618

analogous

#186268 #183A68 #1E1868

triadic

#183A68 #68183A #3A6818

tetradic

#183A68 #681862 #684618 #18681E

square

#183A68 #681862 #684618 #18681E

split-complementary

#183A68 #681E18 #626818

monochromatic

#060E19 #0D1E36 #183A68 #23569A #2F71CB

Accessibility & contrast

On white

11.39

#183A68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#183A68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A68

11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A68	#FFFFFF	#000000	##FFFFFF
##183A68	1.00	11.39	1.84	11.39
#FFFFFF	11.39	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#243E6A

Deuteranopia (green-blind)

#163767

Tritanopia (blue-blind)

#00454C

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183a68;
/* rgb */ color: rgb(24, 58, 104);
/* oklch */ color: oklch(35.0% 0.090 256.8);

Tailwind

colors: {
  custom: {
    50: '#616f93',
    500: '#183a68',
    950: '#000000',
  },
}

SCSS

$custom: #183a68;
$custom-light: #616f93;
$custom-dark: #000000;

JSON

{
  "hex": "#183a68",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 104
  },
  "hsl": {
    "h": 214.5,
    "s": 62.5,
    "l": 25.098
  },
  "oklch": {
    "l": 0.34955,
    "c": 0.08961,
    "h": 256.8
  },
  "luminance": 0.0422
}

Semantic roles & 50–950 ramp

primary

#183A68

secondary

#9E753E

accent

#A042E6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #183A68

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

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