#183C6D#183C6D

#183C6D is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.8% C 0.095 H 257.0°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#183C6D
RGB	rgb(24, 60, 109)
HSL	hsl(215, 64%, 26%)
HSV	hsv(215, 78%, 43%)
CMYK	cmyk(78%, 45%, 0%, 57.3%)
CIE-LAB	lab(25.35, 5.96, -32.20)
CIE-LCH	lch(25.35, 32.75, 280.49°)
OKLab	oklab(35.81% -0.0213 -0.0921)
OKLCH	oklch(35.81% 0.095 257)
XYZ	xyz(4.7519, 4.5295, 15.0889)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C6D #6D4918

analogous

#18666D #183C6D #1E186D

triadic

#183C6D #6D183C #3C6D18

tetradic

#183C6D #6D1866 #6D4918 #186D1E

square

#183C6D #6D1866 #6D4918 #186D1E

split-complementary

#183C6D #6D1E18 #666D18

monochromatic

#060E19 #0D203B #183C6D #23589F #2E73D1

Accessibility & contrast

On white

11.02

#183C6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#183C6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C6D

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C6D	#FFFFFF	#000000	##FFFFFF
##183C6D	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#24406F

Deuteranopia (green-blind)

#15386C

Tritanopia (blue-blind)

#00484F

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #183c6d;
/* rgb */ color: rgb(24, 60, 109);
/* oklch */ color: oklch(35.8% 0.095 257.0);

Tailwind

colors: {
  custom: {
    50: '#627197',
    500: '#183c6d',
    950: '#000000',
  },
}

SCSS

$custom: #183c6d;
$custom-light: #627197;
$custom-dark: #000000;

JSON

{
  "hex": "#183c6d",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 109
  },
  "hsl": {
    "h": 214.588,
    "s": 63.91,
    "l": 26.078
  },
  "oklch": {
    "l": 0.3581,
    "c": 0.09453,
    "h": 257
  },
  "luminance": 0.0453
}

Semantic roles & 50–950 ramp

primary

#183C6D

secondary

#A3783E

accent

#A141E7

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #183C6D

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

Preview Lab → · Contrast checker → · Palette generator →