#1C557D#1C557D

#1C557D is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.3% C 0.088 H 243.4°. Best body text is #FFFFFF at 7.94:1 contrast (WCAG AA passes).

Color values

HEX#1C557D
RGBrgb(28, 85, 125)
HSLhsl(205, 63%, 30%)
HSVhsv(205, 78%, 49%)
CMYKcmyk(77.6%, 32%, 0%, 51%)
CIE-LABlab(34.44, -3.67, -27.83)
CIE-LCHlch(34.44, 28.07, 262.49°)
OKLaboklab(43.28% -0.0394 -0.0788)
OKLCHoklch(43.28% 0.088 243.4)
XYZxyz(7.4276, 8.2237, 20.5939)
Luminance0.0823 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C557D #7D441C
analogous
#1C7D74 #1C557D #1C257D
triadic
#1C557D #7D1C55 #557D1C
tetradic
#1C557D #741C7D #7D441C #257D1C
square
#1C557D #741C7D #7D441C #257D1C
split-complementary
#1C557D #7D1C25 #7D741C
monochromatic
#061119 #11334B #1C557D #2777AF #3F97D4

Accessibility & contrast

On white

7.94
#1C557D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.65
#1C557D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C557D
7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C557D#FFFFFF#000000##FFFFFF
##1C557D1.007.942.657.94
#FFFFFF7.941.0021.001.00
#0000002.6521.001.0021.00
##FFFFFF7.941.0021.001.00

Color blindness preview

Protanopia (red-blind)
#43567F
Deuteranopia (green-blind)
#354D7C
Tritanopia (blue-blind)
#005F63
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #1c557d;
/* rgb */ color: rgb(28, 85, 125);
/* oklch */ color: oklch(43.3% 0.088 243.4);
Tailwind
colors: {
  custom: {
    50: '#6784a3',
    500: '#1c557d',
    950: '#000000',
  },
}
SCSS
$custom: #1c557d;
$custom-light: #6784a3;
$custom-dark: #000000;
JSON
{
  "hex": "#1c557d",
  "rgb": {
    "r": 28,
    "g": 85,
    "b": 125
  },
  "hsl": {
    "h": 204.742,
    "s": 63.399,
    "l": 30
  },
  "oklch": {
    "l": 0.43276,
    "c": 0.08814,
    "h": 243.4
  },
  "luminance": 0.08225
}

Semantic roles & 50–950 ramp

primary
#1C557D
secondary
#B17144
accent
#8541E6
background
#F6F8FA
surface
#EBEFF3
border
#C6CACD
text
#070A0F
muted
#7A7C7F

Preview Lab

Preview with #1C557D

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

Preview Lab → · Contrast checker → · Palette generator →

#1C557D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva