#1C557F#1C557F

#1C557F is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.4% C 0.091 H 244.7°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX#1C557F
RGBrgb(28, 85, 127)
HSLhsl(205, 64%, 30%)
HSVhsv(205, 78%, 50%)
CMYKcmyk(78%, 33.1%, 0%, 50.2%)
CIE-LABlab(34.55, -2.89, -28.90)
CIE-LCHlch(34.55, 29.04, 264.29°)
OKLaboklab(43.39% -0.0387 -0.0819)
OKLCHoklch(43.39% 0.091 244.7)
XYZxyz(7.5567, 8.2753, 21.2736)
Luminance0.0828 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C557F #7F461C
analogous
#1C7F78 #1C557F #1C237F
triadic
#1C557F #7F1C55 #557F1C
tetradic
#1C557F #781C7F #7F461C #237F1C
square
#1C557F #781C7F #7F461C #237F1C
split-complementary
#1C557F #7F1C23 #7F781C
monochromatic
#06121B #11334D #1C557F #2777B1 #4096D5

Accessibility & contrast

On white

7.91
#1C557F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.66
#1C557F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C557F
7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C557F#FFFFFF#000000##FFFFFF
##1C557F1.007.912.667.91
#FFFFFF7.911.0021.001.00
#0000002.6621.001.0021.00
##FFFFFF7.911.0021.001.00

Color blindness preview

Protanopia (red-blind)
#425681
Deuteranopia (green-blind)
#344D7E
Tritanopia (blue-blind)
#005F64
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #1c557f;
/* rgb */ color: rgb(28, 85, 127);
/* oklch */ color: oklch(43.4% 0.091 244.7);
Tailwind
colors: {
  custom: {
    50: '#6784a4',
    500: '#1c557f',
    950: '#000000',
  },
}
SCSS
$custom: #1c557f;
$custom-light: #6784a4;
$custom-dark: #000000;
JSON
{
  "hex": "#1c557f",
  "rgb": {
    "r": 28,
    "g": 85,
    "b": 127
  },
  "hsl": {
    "h": 205.455,
    "s": 63.871,
    "l": 30.392
  },
  "oklch": {
    "l": 0.43393,
    "c": 0.09065,
    "h": 244.7
  },
  "luminance": 0.08276
}

Semantic roles & 50–950 ramp

primary
#1C557F
secondary
#B37344
accent
#8741E7
background
#F6F8FA
surface
#EBEFF4
border
#C6CACE
text
#070A0F
muted
#7A7C7F

Preview Lab

Preview with #1C557F

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

Preview Lab → · Contrast checker → · Palette generator →

#1C557F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva