#183C7C#183C7C

#183C7C is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.9% C 0.117 H 260.9°. Best body text is #FFFFFF at 10.63:1 contrast (WCAG AA passes).

Color values

HEX	#183C7C
RGB	rgb(24, 60, 124)
HSL	hsl(218, 68%, 29%)
HSV	hsv(218, 81%, 49%)
CMYK	cmyk(80.6%, 51.6%, 0%, 51.4%)
CIE-LAB	lab(26.39, 12.18, -40.05)
CIE-LCH	lch(26.39, 41.86, 286.91°)
OKLab	oklab(36.95% -0.0185 -0.1152)
OKLCH	oklch(36.95% 0.117 260.9)
XYZ	xyz(5.6293, 4.8805, 19.7102)
Luminance	0.0488 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C7C #7C5818

analogous

#186E7C #183C7C #26187C

triadic

#183C7C #7C183C #3C7C18

tetradic

#183C7C #7C186E #7C5818 #187C26

square

#183C7C #7C186E #7C5818 #187C26

split-complementary

#183C7C #7C2618 #6E7C18

monochromatic

#050C1A #0E2349 #183C7C #2255AF #3671D8

Accessibility & contrast

On white

10.63

#183C7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#183C7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C7C

10.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C7C	#FFFFFF	#000000	##FFFFFF
##183C7C	1.00	10.63	1.98	10.63
#FFFFFF	10.63	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15437E

Deuteranopia (green-blind)

#003A7B

Tritanopia (blue-blind)

#004B56

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #183c7c;
/* rgb */ color: rgb(24, 60, 124);
/* oklch */ color: oklch(36.9% 0.117 260.9);

Tailwind

colors: {
  custom: {
    50: '#6671a2',
    500: '#183c7c',
    950: '#000000',
  },
}

SCSS

$custom: #183c7c;
$custom-light: #6671a2;
$custom-dark: #000000;

JSON

{
  "hex": "#183c7c",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 124
  },
  "hsl": {
    "h": 218.4,
    "s": 67.568,
    "l": 29.02
  },
  "oklch": {
    "l": 0.36946,
    "c": 0.11666,
    "h": 260.9
  },
  "luminance": 0.04881
}

Semantic roles & 50–950 ramp

primary

#183C7C

secondary

#B1883F

accent

#AC3DEA

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #183C7C

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

Preview Lab → · Contrast checker → · Palette generator →