#183963#183963

#183963 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.4% C 0.083 H 255.7°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX	#183963
RGB	rgb(24, 57, 99)
HSL	hsl(214, 61%, 24%)
HSV	hsv(214, 76%, 39%)
CMYK	cmyk(75.8%, 42.4%, 0%, 61.2%)
CIE-LAB	lab(23.74, 3.93, -28.33)
CIE-LCH	lch(23.74, 28.60, 277.91°)
OKLab	oklab(34.35% -0.0206 -0.0808)
OKLCH	oklch(34.35% 0.083 255.7)
XYZ	xyz(4.0911, 4.0209, 12.3625)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183963 #634218

analogous

#185F63 #183963 #1D1863

triadic

#183963 #631839 #396318

tetradic

#183963 #63185F #634218 #18631D

square

#183963 #63185F #634218 #18631D

split-complementary

#183963 #631D18 #5F6318

monochromatic

#060E19 #0C1D32 #183963 #245594 #3072C6

Accessibility & contrast

On white

11.64

#183963 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#183963 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183963

11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183963	#FFFFFF	#000000	##FFFFFF
##183963	1.00	11.64	1.80	11.64
#FFFFFF	11.64	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#253C65

Deuteranopia (green-blind)

#1A3562

Tritanopia (blue-blind)

#004349

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #183963;
/* rgb */ color: rgb(24, 57, 99);
/* oklch */ color: oklch(34.4% 0.083 255.7);

Tailwind

colors: {
  custom: {
    50: '#606f8f',
    500: '#183963',
    950: '#000000',
  },
}

SCSS

$custom: #183963;
$custom-light: #606f8f;
$custom-dark: #000000;

JSON

{
  "hex": "#183963",
  "rgb": {
    "r": 24,
    "g": 57,
    "b": 99
  },
  "hsl": {
    "h": 213.6,
    "s": 60.976,
    "l": 24.118
  },
  "oklch": {
    "l": 0.34351,
    "c": 0.08338,
    "h": 255.7
  },
  "luminance": 0.04021
}

Semantic roles & 50–950 ramp

primary

#183963

secondary

#99713E

accent

#9E44E4

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #183963

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

Preview Lab → · Contrast checker → · Palette generator →