#18375C#18375C

#18375C is a dark, moderate cyan. Relative luminance 0.037; OKLCH L 33.4% C 0.075 H 254.3°. Best body text is #FFFFFF at 12.07:1 contrast (WCAG AA passes).

Color values

HEX	#18375C
RGB	rgb(24, 55, 92)
HSL	hsl(213, 59%, 23%)
HSV	hsv(213, 74%, 36%)
CMYK	cmyk(73.9%, 40.2%, 0%, 63.9%)
CIE-LAB	lab(22.65, 2.46, -25.49)
CIE-LCH	lch(22.65, 25.61, 275.52°)
OKLab	oklab(33.36% -0.0203 -0.0725)
OKLCH	oklch(33.36% 0.075 254.3)
XYZ	xyz(3.6739, 3.6989, 10.6435)
Luminance	0.0370 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18375C #5C3D18

analogous

#18595C #18375C #1B185C

triadic

#18375C #5C1837 #375C18

tetradic

#18375C #5C1859 #5C3D18 #185C1B

square

#18375C #5C1859 #5C3D18 #185C1B

split-complementary

#18375C #5C1B18 #595C18

monochromatic

#060F18 #0B1A2B #18375C #25548D #3171BD

Accessibility & contrast

On white

12.07

#18375C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#18375C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18375C

12.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18375C	#FFFFFF	#000000	##FFFFFF
##18375C	1.00	12.07	1.74	12.07
#FFFFFF	12.07	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#263A5E

Deuteranopia (green-blind)

#1C335B

Tritanopia (blue-blind)

#004045

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #18375c;
/* rgb */ color: rgb(24, 55, 92);
/* oklch */ color: oklch(33.4% 0.075 254.3);

Tailwind

colors: {
  custom: {
    50: '#5e6d8a',
    500: '#18375c',
    950: '#000000',
  },
}

SCSS

$custom: #18375c;
$custom-light: #5e6d8a;
$custom-dark: #000000;

JSON

{
  "hex": "#18375c",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 92
  },
  "hsl": {
    "h": 212.647,
    "s": 58.621,
    "l": 22.745
  },
  "oklch": {
    "l": 0.3336,
    "c": 0.07531,
    "h": 254.3
  },
  "luminance": 0.03699
}

Semantic roles & 50–950 ramp

primary

#18375C

secondary

#936C3D

accent

#9B46E2

background

#F5F6F8

surface

#E9EBF0

border

#C5C6CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #18375C

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

Preview Lab → · Contrast checker → · Palette generator →