#1C537B#1C537B

#1C537B is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 42.6% C 0.087 H 244.2°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX#1C537B
RGBrgb(28, 83, 123)
HSLhsl(205, 63%, 30%)
HSVhsv(205, 77%, 48%)
CMYKcmyk(77.2%, 32.5%, 0%, 51.8%)
CIE-LABlab(33.70, -3.17, -27.77)
CIE-LCHlch(33.70, 27.95, 263.48°)
OKLaboklab(42.65% -0.038 -0.0787)
OKLCHoklch(42.65% 0.087 244.2)
XYZxyz(7.1459, 7.8626, 19.8761)
Luminance0.0786 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C537B #7B441C
analogous
#1C7B74 #1C537B #1C247B
triadic
#1C537B #7B1C53 #537B1C
tetradic
#1C537B #741C7B #7B441C #247B1C
square
#1C537B #741C7B #7B441C #247B1C
split-complementary
#1C537B #7B1C24 #7B741C
monochromatic
#061119 #113149 #1C537B #2775AD #3E94D3

Accessibility & contrast

On white

8.16
#1C537B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.57
#1C537B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C537B
8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C537B#FFFFFF#000000##FFFFFF
##1C537B1.008.162.578.16
#FFFFFF8.161.0021.001.00
#0000002.5721.001.0021.00
##FFFFFF8.161.0021.001.00

Color blindness preview

Protanopia (red-blind)
#41547D
Deuteranopia (green-blind)
#334B7A
Tritanopia (blue-blind)
#005D61
Achromatopsia (no color)
#4F4F4F

Design tokens & code

CSS
--color: #1c537b;
/* rgb */ color: rgb(28, 83, 123);
/* oklch */ color: oklch(42.6% 0.087 244.2);
Tailwind
colors: {
  custom: {
    50: '#6783a1',
    500: '#1c537b',
    950: '#000000',
  },
}
SCSS
$custom: #1c537b;
$custom-light: #6783a1;
$custom-dark: #000000;
JSON
{
  "hex": "#1c537b",
  "rgb": {
    "r": 28,
    "g": 83,
    "b": 123
  },
  "hsl": {
    "h": 205.263,
    "s": 62.914,
    "l": 29.608
  },
  "oklch": {
    "l": 0.42649,
    "c": 0.0874,
    "h": 244.2
  },
  "luminance": 0.07863
}

Semantic roles & 50–950 ramp

primary
#1C537B
secondary
#AF7144
accent
#8742E6
background
#F6F7F9
surface
#EBEEF2
border
#C6C9CC
text
#070A0F
muted
#7A7C7E

Preview Lab

Preview with #1C537B

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

Preview Lab → · Contrast checker → · Palette generator →

#1C537B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva