#1B5D84#1B5D84

#1B5D84 is a mid, moderate cyan. Relative luminance 0.097; OKLCH L 45.7% C 0.090 H 239.6°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX#1B5D84
RGBrgb(27, 93, 132)
HSLhsl(202, 66%, 31%)
HSVhsv(202, 80%, 52%)
CMYKcmyk(79.5%, 29.5%, 0%, 48.2%)
CIE-LABlab(37.35, -6.09, -27.57)
CIE-LCHlch(37.35, 28.23, 257.54°)
OKLaboklab(45.68% -0.0457 -0.078)
OKLCHoklch(45.68% 0.09 239.6)
XYZxyz(8.5296, 9.7266, 23.2532)
Luminance0.0973 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5D84 #84421B
analogous
#1B8476 #1B5D84 #1B2884
triadic
#1B5D84 #841B5D #5D841B
tetradic
#1B5D84 #761B84 #84421B #28841B
square
#1B5D84 #761B84 #84421B #28841B
split-complementary
#1B5D84 #841B28 #84761B
monochromatic
#06151E #113951 #1B5D84 #2581B7 #41A0D8

Accessibility & contrast

On white

7.13
#1B5D84 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.95
#1B5D84 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5D84
7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5D84#FFFFFF#000000##FFFFFF
##1B5D841.007.132.957.13
#FFFFFF7.131.0021.001.00
#0000002.9521.001.0021.00
##FFFFFF7.131.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4B5D86
Deuteranopia (green-blind)
#3C5483
Tritanopia (blue-blind)
#00676B
Achromatopsia (no color)
#585858

Design tokens & code

CSS
--color: #1b5d84;
/* rgb */ color: rgb(27, 93, 132);
/* oklch */ color: oklch(45.7% 0.090 239.6);
Tailwind
colors: {
  custom: {
    50: '#688aa8',
    500: '#1b5d84',
    950: '#000000',
  },
}
SCSS
$custom: #1b5d84;
$custom-light: #688aa8;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5d84",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 132
  },
  "hsl": {
    "h": 202.286,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.45684,
    "c": 0.09038,
    "h": 239.6
  },
  "luminance": 0.09728
}

Semantic roles & 50–950 ramp

primary
#1B5D84
secondary
#B76E43
accent
#7E3FE9
background
#F6F8FA
surface
#ECF0F4
border
#C7CBCE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #1B5D84

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5D84 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva