#1B5C83#1B5C83

#1B5C83 is a mid, moderate cyan. Relative luminance 0.095; OKLCH L 45.4% C 0.090 H 240.0°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX#1B5C83
RGBrgb(27, 92, 131)
HSLhsl(203, 66%, 31%)
HSVhsv(203, 79%, 51%)
CMYKcmyk(79.4%, 29.8%, 0%, 48.6%)
CIE-LABlab(36.98, -5.86, -27.54)
CIE-LCHlch(36.98, 28.16, 257.99°)
OKLaboklab(45.37% -0.045 -0.0779)
OKLCHoklch(45.37% 0.09 240)
XYZxyz(8.3743, 9.5250, 22.8655)
Luminance0.0953 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5C83 #83421B
analogous
#1B8376 #1B5C83 #1B2883
triadic
#1B5C83 #831B5C #5C831B
tetradic
#1B5C83 #761B83 #83421B #28831B
square
#1B5C83 #761B83 #83421B #28831B
split-complementary
#1B5C83 #831B28 #83761B
monochromatic
#06151E #113850 #1B5C83 #2580B6 #419FD8

Accessibility & contrast

On white

7.23
#1B5C83 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.91
#1B5C83 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5C83
7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5C83#FFFFFF#000000##FFFFFF
##1B5C831.007.232.917.23
#FFFFFF7.231.0021.001.00
#0000002.9121.001.0021.00
##FFFFFF7.231.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4A5C85
Deuteranopia (green-blind)
#3B5382
Tritanopia (blue-blind)
#00666A
Achromatopsia (no color)
#575757

Design tokens & code

CSS
--color: #1b5c83;
/* rgb */ color: rgb(27, 92, 131);
/* oklch */ color: oklch(45.4% 0.090 240.0);
Tailwind
colors: {
  custom: {
    50: '#688aa7',
    500: '#1b5c83',
    950: '#000000',
  },
}
SCSS
$custom: #1b5c83;
$custom-light: #688aa7;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5c83",
  "rgb": {
    "r": 27,
    "g": 92,
    "b": 131
  },
  "hsl": {
    "h": 202.5,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.45373,
    "c": 0.08999,
    "h": 240
  },
  "luminance": 0.09526
}

Semantic roles & 50–950 ramp

primary
#1B5C83
secondary
#B66F43
accent
#7F3FE9
background
#F6F8FA
surface
#ECF0F4
border
#C7CBCE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #1B5C83

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5C83 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva