#1C588D#1C588D

#1C588D is a dark, moderate cyan. Relative luminance 0.091; OKLCH L 45.0% C 0.106 H 249.3°. Best body text is #FFFFFF at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#1C588D
RGB	rgb(28, 88, 141)
HSL	hsl(208, 67%, 33%)
HSV	hsv(208, 80%, 55%)
CMYK	cmyk(80.1%, 37.6%, 0%, 44.7%)
CIE-LAB	lab(36.27, 0.68, -34.75)
CIE-LCH	lch(36.27, 34.75, 271.12°)
OKLab	oklab(45% -0.0375 -0.099)
OKLCH	oklch(45% 0.106 249.3)
XYZ	xyz(8.7745, 9.1484, 26.4975)
Luminance	0.0915 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C588D #8D511C

analogous

#1C8D89 #1C588D #1C1F8D

triadic

#1C588D #8D1C58 #588D1C

tetradic

#1C588D #891C8D #8D511C #1F8D1C

square

#1C588D #891C8D #8D511C #1F8D1C

split-complementary

#1C588D #8D1C1F #8D891C

monochromatic

#081827 #12385A #1C588D #2678C0 #4996DB

Accessibility & contrast

On white

7.42

#1C588D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#1C588D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C588D

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C588D	#FFFFFF	#000000	##FFFFFF
##1C588D	1.00	7.42	2.83	7.42
#FFFFFF	7.42	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5B8F

Deuteranopia (green-blind)

#2E518C

Tritanopia (blue-blind)

#00656B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1c588d;
/* rgb */ color: rgb(28, 88, 141);
/* oklch */ color: oklch(45.0% 0.106 249.3);

Tailwind

colors: {
  custom: {
    50: '#6b86ae',
    500: '#1c588d',
    950: '#000000',
  },
}

SCSS

$custom: #1c588d;
$custom-light: #6b86ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1c588d",
  "rgb": {
    "r": 28,
    "g": 88,
    "b": 141
  },
  "hsl": {
    "h": 208.142,
    "s": 66.864,
    "l": 33.137
  },
  "oklch": {
    "l": 0.44997,
    "c": 0.10587,
    "h": 249.3
  },
  "luminance": 0.09149
}

Semantic roles & 50–950 ramp

primary

#1C588D

secondary

#BD7F48

accent

#8F3EEA

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1C588D

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

Preview Lab → · Contrast checker → · Palette generator →