#18507B#18507B

#18507B is a dark, moderate cyan. Relative luminance 0.074; OKLCH L 41.8% C 0.092 H 246.0°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#18507B
RGB	rgb(24, 80, 123)
HSL	hsl(206, 67%, 29%)
HSV	hsv(206, 80%, 48%)
CMYK	cmyk(80.5%, 35%, 0%, 51.8%)
CIE-LAB	lab(32.61, -1.78, -29.48)
CIE-LCH	lch(32.61, 29.54, 266.54°)
OKLab	oklab(41.76% -0.0372 -0.0838)
OKLCH	oklch(41.76% 0.092 246)
XYZ	xyz(6.8191, 7.3608, 19.7964)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18507B #7B4318

analogous

#187B75 #18507B #181E7B

triadic

#18507B #7B1850 #507B18

tetradic

#18507B #75187B #7B4318 #1E7B18

square

#18507B #75187B #7B4318 #1E7B18

split-complementary

#18507B #7B181E #7B7518

monochromatic

#05111A #0E2F48 #18507B #2271AE #3691D8

Accessibility & contrast

On white

8.49

#18507B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#18507B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18507B

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18507B	#FFFFFF	#000000	##FFFFFF
##18507B	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C527D

Deuteranopia (green-blind)

#2E497A

Tritanopia (blue-blind)

#005A5F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #18507b;
/* rgb */ color: rgb(24, 80, 123);
/* oklch */ color: oklch(41.8% 0.092 246.0);

Tailwind

colors: {
  custom: {
    50: '#6580a1',
    500: '#18507b',
    950: '#000000',
  },
}

SCSS

$custom: #18507b;
$custom-light: #6580a1;
$custom-dark: #000000;

JSON

{
  "hex": "#18507b",
  "rgb": {
    "r": 24,
    "g": 80,
    "b": 123
  },
  "hsl": {
    "h": 206.061,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.41764,
    "c": 0.09168,
    "h": 246
  },
  "luminance": 0.07362
}

Semantic roles & 50–950 ramp

primary

#18507B

secondary

#B0703F

accent

#893EEA

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#060A0F

muted

#7A7C7E

Preview Lab

Preview with #18507B

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

Preview Lab → · Contrast checker → · Palette generator →