#183D7D#183D7D

#183D7D is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.117 H 260.6°. Best body text is #FFFFFF at 10.49:1 contrast (WCAG AA passes).

Color values

HEX	#183D7D
RGB	rgb(24, 61, 125)
HSL	hsl(218, 68%, 29%)
HSV	hsv(218, 81%, 49%)
CMYK	cmyk(80.8%, 51.2%, 0%, 51%)
CIE-LAB	lab(26.77, 11.89, -40.07)
CIE-LCH	lch(26.77, 41.80, 286.53°)
OKLab	oklab(37.26% -0.0192 -0.1152)
OKLCH	oklch(37.26% 0.117 260.6)
XYZ	xyz(5.7458, 5.0117, 20.0626)
Luminance	0.0501 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D7D #7D5818

analogous

#18707D #183D7D #26187D

triadic

#183D7D #7D183D #3D7D18

tetradic

#183D7D #7D1870 #7D5818 #187D26

square

#183D7D #7D1870 #7D5818 #187D26

split-complementary

#183D7D #7D2618 #707D18

monochromatic

#050D1A #0E244A #183D7D #2256B0 #3772D9

Accessibility & contrast

On white

10.49

#183D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#183D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D7D

10.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D7D	#FFFFFF	#000000	##FFFFFF
##183D7D	1.00	10.49	2.00	10.49
#FFFFFF	10.49	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17447F

Deuteranopia (green-blind)

#003B7C

Tritanopia (blue-blind)

#004C57

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183d7d;
/* rgb */ color: rgb(24, 61, 125);
/* oklch */ color: oklch(37.3% 0.117 260.6);

Tailwind

colors: {
  custom: {
    50: '#6671a3',
    500: '#183d7d',
    950: '#000000',
  },
}

SCSS

$custom: #183d7d;
$custom-light: #6671a3;
$custom-dark: #000000;

JSON

{
  "hex": "#183d7d",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 125
  },
  "hsl": {
    "h": 218.02,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.37258,
    "c": 0.11681,
    "h": 260.6
  },
  "luminance": 0.05012
}

Semantic roles & 50–950 ramp

primary

#183D7D

secondary

#B2883F

accent

#AB3DEB

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #183D7D

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

Preview Lab → · Contrast checker → · Palette generator →