#183C6B#183C6B

#183C6B is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.7% C 0.092 H 256.3°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#183C6B
RGB	rgb(24, 60, 107)
HSL	hsl(214, 63%, 26%)
HSV	hsv(214, 78%, 42%)
CMYK	cmyk(77.6%, 43.9%, 0%, 58%)
CIE-LAB	lab(25.22, 5.14, -31.13)
CIE-LCH	lch(25.22, 31.55, 279.37°)
OKLab	oklab(35.67% -0.0217 -0.089)
OKLCH	oklch(35.67% 0.092 256.3)
XYZ	xyz(4.6454, 4.4869, 14.5283)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C6B #6B4718

analogous

#18656B #183C6B #1D186B

triadic

#183C6B #6B183C #3C6B18

tetradic

#183C6B #6B1865 #6B4718 #186B1D

square

#183C6B #6B1865 #6B4718 #186B1D

split-complementary

#183C6B #6B1D18 #656B18

monochromatic

#060E19 #0D2039 #183C6B #23589D #2E74CF

Accessibility & contrast

On white

11.07

#183C6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#183C6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C6B

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C6B	#FFFFFF	#000000	##FFFFFF
##183C6B	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#25406D

Deuteranopia (green-blind)

#17386A

Tritanopia (blue-blind)

#00474E

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #183c6b;
/* rgb */ color: rgb(24, 60, 107);
/* oklch */ color: oklch(35.7% 0.092 256.3);

Tailwind

colors: {
  custom: {
    50: '#617196',
    500: '#183c6b',
    950: '#000000',
  },
}

SCSS

$custom: #183c6b;
$custom-light: #617196;
$custom-dark: #000000;

JSON

{
  "hex": "#183c6b",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 107
  },
  "hsl": {
    "h": 213.976,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.35667,
    "c": 0.09158,
    "h": 256.3
  },
  "luminance": 0.04487
}

Semantic roles & 50–950 ramp

primary

#183C6B

secondary

#A1763E

accent

#9F41E6

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #183C6B

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

Preview Lab → · Contrast checker → · Palette generator →