#18375D#18375D

#18375D is a dark, moderate cyan. Relative luminance 0.037; OKLCH L 33.4% C 0.077 H 254.9°. Best body text is #FFFFFF at 12.05:1 contrast (WCAG AA passes).

Color values

HEX	#18375D
RGB	rgb(24, 55, 93)
HSL	hsl(213, 59%, 23%)
HSV	hsv(213, 74%, 36%)
CMYK	cmyk(74.2%, 40.9%, 0%, 63.5%)
CIE-LAB	lab(22.71, 2.87, -26.05)
CIE-LCH	lch(22.71, 26.21, 276.29°)
OKLab	oklab(33.43% -0.02 -0.0741)
OKLCH	oklch(33.43% 0.077 254.9)
XYZ	xyz(3.7179, 3.7165, 10.8752)
Luminance	0.0372 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18375D #5D3E18

analogous

#18595D #18375D #1B185D

triadic

#18375D #5D1837 #375D18

tetradic

#18375D #5D1859 #5D3E18 #185D1B

square

#18375D #5D1859 #5D3E18 #185D1B

split-complementary

#18375D #5D1B18 #595D18

monochromatic

#060E18 #0B1A2C #18375D #25548E #3171BE

Accessibility & contrast

On white

12.05

#18375D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#18375D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18375D

12.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18375D	#FFFFFF	#000000	##FFFFFF
##18375D	1.00	12.05	1.74	12.05
#FFFFFF	12.05	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#263A5F

Deuteranopia (green-blind)

#1B335C

Tritanopia (blue-blind)

#004045

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #18375d;
/* rgb */ color: rgb(24, 55, 93);
/* oklch */ color: oklch(33.4% 0.077 254.9);

Tailwind

colors: {
  custom: {
    50: '#5e6d8b',
    500: '#18375d',
    950: '#000000',
  },
}

SCSS

$custom: #18375d;
$custom-light: #5e6d8b;
$custom-dark: #000000;

JSON

{
  "hex": "#18375d",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 93
  },
  "hsl": {
    "h": 213.043,
    "s": 58.974,
    "l": 22.941
  },
  "oklch": {
    "l": 0.33428,
    "c": 0.07681,
    "h": 254.9
  },
  "luminance": 0.03717
}

Semantic roles & 50–950 ramp

primary

#18375D

secondary

#936D3D

accent

#9C46E2

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #18375D

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

Preview Lab → · Contrast checker → · Palette generator →