#183C7D#183C7D

#183C7D is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.118 H 261.1°. Best body text is #FFFFFF at 10.60:1 contrast (WCAG AA passes).

Color values

HEX	#183C7D
RGB	rgb(24, 60, 125)
HSL	hsl(219, 68%, 29%)
HSV	hsv(219, 81%, 49%)
CMYK	cmyk(80.8%, 52%, 0%, 51%)
CIE-LAB	lab(26.46, 12.59, -40.56)
CIE-LCH	lch(26.46, 42.47, 287.25°)
OKLab	oklab(37.03% -0.0183 -0.1167)
OKLCH	oklch(37.03% 0.118 261.1)
XYZ	xyz(5.6929, 4.9059, 20.0450)
Luminance	0.0491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C7D #7D5918

analogous

#186F7D #183C7D #27187D

triadic

#183C7D #7D183C #3C7D18

tetradic

#183C7D #7D186F #7D5918 #187D27

square

#183C7D #7D186F #7D5918 #187D27

split-complementary

#183C7D #7D2718 #6F7D18

monochromatic

#050C1A #0E234A #183C7D #2255B0 #3770D9

Accessibility & contrast

On white

10.60

#183C7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#183C7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C7D

10.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C7D	#FFFFFF	#000000	##FFFFFF
##183C7D	1.00	10.60	1.98	10.60
#FFFFFF	10.60	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14437F

Deuteranopia (green-blind)

#003A7C

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183c7d;
/* rgb */ color: rgb(24, 60, 125);
/* oklch */ color: oklch(37.0% 0.118 261.1);

Tailwind

colors: {
  custom: {
    50: '#6671a3',
    500: '#183c7d',
    950: '#000000',
  },
}

SCSS

$custom: #183c7d;
$custom-light: #6671a3;
$custom-dark: #000000;

JSON

{
  "hex": "#183c7d",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 125
  },
  "hsl": {
    "h": 218.614,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.37026,
    "c": 0.11812,
    "h": 261.1
  },
  "luminance": 0.04907
}

Semantic roles & 50–950 ramp

primary

#183C7D

secondary

#B2893F

accent

#AD3DEB

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #183C7D

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

Preview Lab → · Contrast checker → · Palette generator →