#183C6F#183C6F

#183C6F is a dark, moderate blue. Relative luminance 0.046; OKLCH L 36.0% C 0.098 H 257.7°. Best body text is #FFFFFF at 10.97:1 contrast (WCAG AA passes).

Color values

HEX	#183C6F
RGB	rgb(24, 60, 111)
HSL	hsl(215, 64%, 26%)
HSV	hsv(215, 78%, 44%)
CMYK	cmyk(78.4%, 45.9%, 0%, 56.5%)
CIE-LAB	lab(25.48, 6.79, -33.27)
CIE-LCH	lch(25.48, 33.96, 281.53°)
OKLab	oklab(35.96% -0.0208 -0.0952)
OKLCH	oklch(35.96% 0.098 257.7)
XYZ	xyz(4.8607, 4.5731, 15.6624)
Luminance	0.0457 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C6F #6F4B18

analogous

#18686F #183C6F #20186F

triadic

#183C6F #6F183C #3C6F18

tetradic

#183C6F #6F1868 #6F4B18 #186F20

square

#183C6F #6F1868 #6F4B18 #186F20

split-complementary

#183C6F #6F2018 #686F18

monochromatic

#050E19 #0D213D #183C6F #2357A1 #2F73D2

Accessibility & contrast

On white

10.97

#183C6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#183C6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C6F

10.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C6F	#FFFFFF	#000000	##FFFFFF
##183C6F	1.00	10.97	1.91	10.97
#FFFFFF	10.97	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224171

Deuteranopia (green-blind)

#12396E

Tritanopia (blue-blind)

#004850

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #183c6f;
/* rgb */ color: rgb(24, 60, 111);
/* oklch */ color: oklch(36.0% 0.098 257.7);

Tailwind

colors: {
  custom: {
    50: '#627199',
    500: '#183c6f',
    950: '#000000',
  },
}

SCSS

$custom: #183c6f;
$custom-light: #627199;
$custom-dark: #000000;

JSON

{
  "hex": "#183c6f",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 111
  },
  "hsl": {
    "h": 215.172,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.35955,
    "c": 0.0975,
    "h": 257.7
  },
  "luminance": 0.04574
}

Semantic roles & 50–950 ramp

primary

#183C6F

secondary

#A57A3E

accent

#A240E7

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #183C6F

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

Preview Lab → · Contrast checker → · Palette generator →