#183F67#183F67

#183F67 is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.2% C 0.082 H 251.6°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#183F67
RGB	rgb(24, 63, 103)
HSL	hsl(210, 62%, 25%)
HSV	hsv(210, 77%, 40%)
CMYK	cmyk(76.7%, 38.8%, 0%, 59.6%)
CIE-LAB	lab(25.95, 1.43, -27.41)
CIE-LCH	lch(25.95, 27.45, 272.99°)
OKLab	oklab(36.15% -0.0259 -0.078)
OKLCH	oklch(36.15% 0.082 251.6)
XYZ	xyz(4.6015, 4.7280, 13.4994)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F67 #674018

analogous

#186767 #183F67 #191867

triadic

#183F67 #67183F #3F6718

tetradic

#183F67 #671867 #674018 #186719

square

#183F67 #671867 #674018 #186719

split-complementary

#183F67 #671918 #676718

monochromatic

#060F19 #0C2135 #183F67 #245D99 #2F7CCA

Accessibility & contrast

On white

10.79

#183F67 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#183F67 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F67

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F67	#FFFFFF	#000000	##FFFFFF
##183F67	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4169

Deuteranopia (green-blind)

#213A66

Tritanopia (blue-blind)

#00484E

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183f67;
/* rgb */ color: rgb(24, 63, 103);
/* oklch */ color: oklch(36.2% 0.082 251.6);

Tailwind

colors: {
  custom: {
    50: '#617392',
    500: '#183f67',
    950: '#000000',
  },
}

SCSS

$custom: #183f67;
$custom-light: #617392;
$custom-dark: #000000;

JSON

{
  "hex": "#183f67",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 103
  },
  "hsl": {
    "h": 210.38,
    "s": 62.205,
    "l": 24.902
  },
  "oklch": {
    "l": 0.36152,
    "c": 0.08218,
    "h": 251.6
  },
  "luminance": 0.04728
}

Semantic roles & 50–950 ramp

primary

#183F67

secondary

#9D6E3E

accent

#9543E5

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05080D

muted

#7A7B7E

Preview Lab

Preview with #183F67

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

Preview Lab → · Contrast checker → · Palette generator →