#18375E#18375E

#18375E is a dark, moderate cyan. Relative luminance 0.037; OKLCH L 33.5% C 0.078 H 255.4°. Best body text is #FFFFFF at 12.02:1 contrast (WCAG AA passes).

Color values

HEX	#18375E
RGB	rgb(24, 55, 94)
HSL	hsl(213, 59%, 23%)
HSV	hsv(213, 74%, 37%)
CMYK	cmyk(74.5%, 41.5%, 0%, 63.1%)
CIE-LAB	lab(22.77, 3.28, -26.61)
CIE-LCH	lch(22.77, 26.81, 277.03°)
OKLab	oklab(33.5% -0.0198 -0.0758)
OKLCH	oklch(33.5% 0.078 255.4)
XYZ	xyz(3.7625, 3.7343, 11.1100)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18375E #5E3F18

analogous

#185A5E #18375E #1C185E

triadic

#18375E #5E1837 #375E18

tetradic

#18375E #5E185A #5E3F18 #185E1C

square

#18375E #5E185A #5E3F18 #185E1C

split-complementary

#18375E #5E1C18 #5A5E18

monochromatic

#060E18 #0C1A2D #18375E #24548F #3170C0

Accessibility & contrast

On white

12.02

#18375E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#18375E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18375E

12.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18375E	#FFFFFF	#000000	##FFFFFF
##18375E	1.00	12.02	1.75	12.02
#FFFFFF	12.02	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#253A60

Deuteranopia (green-blind)

#1B335D

Tritanopia (blue-blind)

#004046

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #18375e;
/* rgb */ color: rgb(24, 55, 94);
/* oklch */ color: oklch(33.5% 0.078 255.4);

Tailwind

colors: {
  custom: {
    50: '#5f6d8c',
    500: '#18375e',
    950: '#000000',
  },
}

SCSS

$custom: #18375e;
$custom-light: #5f6d8c;
$custom-dark: #000000;

JSON

{
  "hex": "#18375e",
  "rgb": {
    "r": 24,
    "g": 55,
    "b": 94
  },
  "hsl": {
    "h": 213.429,
    "s": 59.322,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33496,
    "c": 0.07832,
    "h": 255.4
  },
  "luminance": 0.03735
}

Semantic roles & 50–950 ramp

primary

#18375E

secondary

#946E3D

accent

#9D45E3

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #18375E

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

Preview Lab → · Contrast checker → · Palette generator →