#183D6E#183D6E

#183D6E is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.1% C 0.095 H 256.6°. Best body text is #FFFFFF at 10.87:1 contrast (WCAG AA passes).

Color values

HEX	#183D6E
RGB	rgb(24, 61, 110)
HSL	hsl(214, 64%, 26%)
HSV	hsv(214, 78%, 43%)
CMYK	cmyk(78.2%, 44.5%, 0%, 56.9%)
CIE-LAB	lab(25.73, 5.68, -32.23)
CIE-LCH	lch(25.73, 32.73, 279.99°)
OKLab	oklab(36.13% -0.022 -0.0922)
OKLCH	oklch(36.13% 0.095 256.6)
XYZ	xyz(4.8589, 4.6569, 15.3916)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D6E #6E4918

analogous

#18686E #183D6E #1E186E

triadic

#183D6E #6E183D #3D6E18

tetradic

#183D6E #6E1868 #6E4918 #186E1E

square

#183D6E #6E1868 #6E4918 #186E1E

split-complementary

#183D6E #6E1E18 #686E18

monochromatic

#050E19 #0D213C #183D6E #2359A0 #2F75D2

Accessibility & contrast

On white

10.87

#183D6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#183D6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D6E

10.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D6E	#FFFFFF	#000000	##FFFFFF
##183D6E	1.00	10.87	1.93	10.87
#FFFFFF	10.87	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254170

Deuteranopia (green-blind)

#16396D

Tritanopia (blue-blind)

#004950

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183d6e;
/* rgb */ color: rgb(24, 61, 110);
/* oklch */ color: oklch(36.1% 0.095 256.6);

Tailwind

colors: {
  custom: {
    50: '#627298',
    500: '#183d6e',
    950: '#000000',
  },
}

SCSS

$custom: #183d6e;
$custom-light: #627298;
$custom-dark: #000000;

JSON

{
  "hex": "#183d6e",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 110
  },
  "hsl": {
    "h": 214.186,
    "s": 64.179,
    "l": 26.275
  },
  "oklch": {
    "l": 0.36129,
    "c": 0.09477,
    "h": 256.6
  },
  "luminance": 0.04657
}

Semantic roles & 50–950 ramp

primary

#183D6E

secondary

#A4783E

accent

#A041E7

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #183D6E

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

Preview Lab → · Contrast checker → · Palette generator →