#1B5984#1B5984

#1B5984 is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.7% C 0.094 H 243.6°. Best body text is #FFFFFF at 7.48:1 contrast (WCAG AA passes).

Color values

HEX#1B5984
RGBrgb(27, 89, 132)
HSLhsl(205, 66%, 31%)
HSVhsv(205, 80%, 52%)
CMYKcmyk(79.5%, 32.6%, 0%, 48.2%)
CIE-LABlab(36.07, -3.60, -29.58)
CIE-LCHlch(36.07, 29.80, 263.06°)
OKLaboklab(44.67% -0.0417 -0.0839)
OKLCHoklch(44.67% 0.094 243.6)
XYZxyz(8.1876, 9.0427, 23.1392)
Luminance0.0904 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5984 #84461B
analogous
#1B847A #1B5984 #1B2584
triadic
#1B5984 #841B59 #59841B
tetradic
#1B5984 #7A1B84 #84461B #25841B
square
#1B5984 #7A1B84 #84461B #25841B
split-complementary
#1B5984 #841B25 #847A1B
monochromatic
#06141E #113751 #1B5984 #257BB7 #419AD8

Accessibility & contrast

On white

7.48
#1B5984 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.81
#1B5984 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5984
7.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5984#FFFFFF#000000##FFFFFF
##1B59841.007.482.817.48
#FFFFFF7.481.0021.001.00
#0000002.8121.001.0021.00
##FFFFFF7.481.0021.001.00

Color blindness preview

Protanopia (red-blind)
#455A86
Deuteranopia (green-blind)
#365083
Tritanopia (blue-blind)
#006468
Achromatopsia (no color)
#555555

Design tokens & code

CSS
--color: #1b5984;
/* rgb */ color: rgb(27, 89, 132);
/* oklch */ color: oklch(44.7% 0.094 243.6);
Tailwind
colors: {
  custom: {
    50: '#6887a8',
    500: '#1b5984',
    950: '#000000',
  },
}
SCSS
$custom: #1b5984;
$custom-light: #6887a8;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5984",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 132
  },
  "hsl": {
    "h": 204.571,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.4467,
    "c": 0.09369,
    "h": 243.6
  },
  "luminance": 0.09044
}

Semantic roles & 50–950 ramp

primary
#1B5984
secondary
#B77343
accent
#853FE9
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #1B5984

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5984 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva