#183F68#183F68

#183F68 is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.2% C 0.084 H 252.2°. Best body text is #FFFFFF at 10.77:1 contrast (WCAG AA passes).

Color values

HEX	#183F68
RGB	rgb(24, 63, 104)
HSL	hsl(211, 63%, 25%)
HSV	hsv(211, 77%, 41%)
CMYK	cmyk(76.9%, 39.4%, 0%, 59.2%)
CIE-LAB	lab(26.00, 1.84, -27.96)
CIE-LCH	lch(26.00, 28.02, 273.77°)
OKLab	oklab(36.22% -0.0256 -0.0796)
OKLCH	oklch(36.22% 0.084 252.2)
XYZ	xyz(4.6520, 4.7482, 13.7653)
Luminance	0.0475 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F68 #684118

analogous

#186768 #183F68 #191868

triadic

#183F68 #68183F #3F6818

tetradic

#183F68 #681867 #684118 #186819

square

#183F68 #681867 #684118 #186819

split-complementary

#183F68 #681918 #676818

monochromatic

#060F19 #0D2136 #183F68 #235D9A #2F7BCB

Accessibility & contrast

On white

10.77

#183F68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#183F68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F68

10.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F68	#FFFFFF	#000000	##FFFFFF
##183F68	1.00	10.77	1.95	10.77
#FFFFFF	10.77	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C426A

Deuteranopia (green-blind)

#203A67

Tritanopia (blue-blind)

#00494E

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #183f68;
/* rgb */ color: rgb(24, 63, 104);
/* oklch */ color: oklch(36.2% 0.084 252.2);

Tailwind

colors: {
  custom: {
    50: '#617393',
    500: '#183f68',
    950: '#000000',
  },
}

SCSS

$custom: #183f68;
$custom-light: #617393;
$custom-dark: #000000;

JSON

{
  "hex": "#183f68",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 104
  },
  "hsl": {
    "h": 210.75,
    "s": 62.5,
    "l": 25.098
  },
  "oklch": {
    "l": 0.36218,
    "c": 0.08361,
    "h": 252.2
  },
  "luminance": 0.04749
}

Semantic roles & 50–950 ramp

primary

#183F68

secondary

#9E6F3E

accent

#9642E6

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05080D

muted

#7A7B7E

Preview Lab

Preview with #183F68

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

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