#18556B#18556B

#18556B is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.2% C 0.070 H 226.5°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#18556B
RGB	rgb(24, 85, 107)
HSL	hsl(196, 63%, 26%)
HSV	hsv(196, 78%, 42%)
CMYK	cmyk(77.6%, 20.6%, 0%, 58%)
CIE-LAB	lab(33.46, -11.08, -18.18)
CIE-LCH	lch(33.46, 21.29, 238.64°)
OKLab	oklab(42.17% -0.0483 -0.051)
OKLCH	oklch(42.17% 0.07 226.5)
XYZ	xyz(6.2779, 7.7520, 15.0725)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#18556B #6B2E18

analogous

#186B57 #18556B #182B6B

triadic

#18556B #6B1855 #556B18

tetradic

#18556B #57186B #6B2E18 #2B6B18

square

#18556B #57186B #6B2E18 #2B6B18

split-complementary

#18556B #6B182B #6B5718

monochromatic

#061419 #0D2D39 #18556B #237D9D #2EA4CF

Accessibility & contrast

On white

8.23

#18556B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#18556B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #18556B

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##18556B	#FFFFFF	#000000	##FFFFFF
##18556B	1.00	8.23	2.55	8.23
#FFFFFF	8.23	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49536C

Deuteranopia (green-blind)

#3E4B6B

Tritanopia (blue-blind)

#005B5C

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #18556b;
/* rgb */ color: rgb(24, 85, 107);
/* oklch */ color: oklch(42.2% 0.070 226.5);

Tailwind

colors: {
  custom: {
    50: '#628595',
    500: '#18556b',
    950: '#000000',
  },
}

SCSS

$custom: #18556b;
$custom-light: #628595;
$custom-dark: #000000;

JSON

{
  "hex": "#18556b",
  "rgb": {
    "r": 24,
    "g": 85,
    "b": 107
  },
  "hsl": {
    "h": 195.904,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.42174,
    "c": 0.07023,
    "h": 226.5
  },
  "luminance": 0.07753
}

Semantic roles & 50–950 ramp

primary

#18556B

secondary

#A1583E

accent

#6D41E6

background

#F6F8F9

surface

#EBEFF1

border

#C6CACB

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #18556B

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

Preview Lab → · Contrast checker → · Palette generator →