#1B5388#1B5388

#1B5388 is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.4% C 0.105 H 250.7°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX#1B5388
RGBrgb(27, 83, 136)
HSLhsl(209, 67%, 32%)
HSVhsv(209, 80%, 53%)
CMYKcmyk(80.1%, 39%, 0%, 46.7%)
CIE-LABlab(34.39, 1.82, -34.69)
CIE-LCHlch(34.39, 34.73, 273.00°)
OKLaboklab(43.42% -0.0347 -0.0989)
OKLCHoklch(43.42% 0.105 250.7)
XYZxyz(7.9875, 8.1961, 24.4488)
Luminance0.0820 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5388 #88501B
analogous
#1B8887 #1B5388 #1B1D88
triadic
#1B5388 #881B53 #53881B
tetradic
#1B5388 #871B88 #88501B #1D881B
square
#1B5388 #871B88 #88501B #1D881B
split-complementary
#1B5388 #881B1D #88871B
monochromatic
#071522 #113455 #1B5388 #2572BB #4491DA

Accessibility & contrast

On white

7.96
#1B5388 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.64
#1B5388 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5388
7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5388#FFFFFF#000000##FFFFFF
##1B53881.007.962.647.96
#FFFFFF7.961.0021.001.00
#0000002.6421.001.0021.00
##FFFFFF7.961.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3A568A
Deuteranopia (green-blind)
#294C87
Tritanopia (blue-blind)
#006067
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #1b5388;
/* rgb */ color: rgb(27, 83, 136);
/* oklch */ color: oklch(43.4% 0.105 250.7);
Tailwind
colors: {
  custom: {
    50: '#6983ab',
    500: '#1b5388',
    950: '#000000',
  },
}
SCSS
$custom: #1b5388;
$custom-light: #6983ab;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5388",
  "rgb": {
    "r": 27,
    "g": 83,
    "b": 136
  },
  "hsl": {
    "h": 209.174,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.43422,
    "c": 0.10483,
    "h": 250.7
  },
  "luminance": 0.08197
}

Semantic roles & 50–950 ramp

primary
#1B5388
secondary
#BB7E44
accent
#923EEA
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#070A10
muted
#7A7C7F

Preview Lab

Preview with #1B5388

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5388 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva