#183C7E#183C7E

#183C7E is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.1% C 0.120 H 261.3°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).

Color values

HEX	#183C7E
RGB	rgb(24, 60, 126)
HSL	hsl(219, 68%, 29%)
HSV	hsv(219, 81%, 49%)
CMYK	cmyk(81%, 52.4%, 0%, 50.6%)
CIE-LAB	lab(26.54, 13.00, -41.07)
CIE-LCH	lch(26.54, 43.08, 287.57°)
OKLab	oklab(37.11% -0.0182 -0.1182)
OKLCH	oklch(37.11% 0.12 261.3)
XYZ	xyz(5.7571, 4.9316, 20.3831)
Luminance	0.0493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C7E #7E5A18

analogous

#186F7E #183C7E #27187E

triadic

#183C7E #7E183C #3C7E18

tetradic

#183C7E #7E186F #7E5A18 #187E27

square

#183C7E #7E186F #7E5A18 #187E27

split-complementary

#183C7E #7E2718 #6F7E18

monochromatic

#050C1A #0E244B #183C7E #2254B1 #3770D9

Accessibility & contrast

On white

10.57

#183C7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#183C7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C7E

10.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C7E	#FFFFFF	#000000	##FFFFFF
##183C7E	1.00	10.57	1.99	10.57
#FFFFFF	10.57	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124480

Deuteranopia (green-blind)

#003A7D

Tritanopia (blue-blind)

#004C57

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183c7e;
/* rgb */ color: rgb(24, 60, 126);
/* oklch */ color: oklch(37.1% 0.120 261.3);

Tailwind

colors: {
  custom: {
    50: '#6671a4',
    500: '#183c7e',
    950: '#000000',
  },
}

SCSS

$custom: #183c7e;
$custom-light: #6671a4;
$custom-dark: #000000;

JSON

{
  "hex": "#183c7e",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 126
  },
  "hsl": {
    "h": 218.824,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.37106,
    "c": 0.11958,
    "h": 261.3
  },
  "luminance": 0.04932
}

Semantic roles & 50–950 ramp

primary

#183C7E

secondary

#B28A3F

accent

#AD3DEB

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #183C7E

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

Preview Lab → · Contrast checker → · Palette generator →