#1B4E85#1B4E85

#1B4E85 is a dark, moderate cyan. Relative luminance 0.074; OKLCH L 42.0% C 0.106 H 253.2°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX#1B4E85
RGBrgb(27, 78, 133)
HSLhsl(211, 66%, 31%)
HSVhsv(211, 80%, 52%)
CMYKcmyk(79.7%, 41.4%, 0%, 47.8%)
CIE-LABlab(32.64, 3.91, -35.62)
CIE-LCHlch(32.64, 35.83, 276.26°)
OKLaboklab(42% -0.0308 -0.1017)
OKLCHoklch(42% 0.106 253.2)
XYZxyz(7.4084, 7.3744, 23.2187)
Luminance0.0737 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B4E85 #85521B
analogous
#1B8385 #1B4E85 #1D1B85
triadic
#1B4E85 #851B4E #4E851B
tetradic
#1B4E85 #851B83 #85521B #1B851D
square
#1B4E85 #851B83 #85521B #1B851D
split-complementary
#1B4E85 #851D1B #83851B
monochromatic
#06121F #113052 #1B4E85 #256CB8 #428AD9

Accessibility & contrast

On white

8.48
#1B4E85 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.47
#1B4E85 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E85
8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B4E85#FFFFFF#000000##FFFFFF
##1B4E851.008.482.478.48
#FFFFFF8.481.0021.001.00
#0000002.4721.001.0021.00
##FFFFFF8.481.0021.001.00

Color blindness preview

Protanopia (red-blind)
#345287
Deuteranopia (green-blind)
#224884
Tritanopia (blue-blind)
#005B63
Achromatopsia (no color)
#4D4D4D

Design tokens & code

CSS
--color: #1b4e85;
/* rgb */ color: rgb(27, 78, 133);
/* oklch */ color: oklch(42.0% 0.106 253.2);
Tailwind
colors: {
  custom: {
    50: '#687fa9',
    500: '#1b4e85',
    950: '#000000',
  },
}
SCSS
$custom: #1b4e85;
$custom-light: #687fa9;
$custom-dark: #000000;
JSON
{
  "hex": "#1b4e85",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 133
  },
  "hsl": {
    "h": 211.132,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.42001,
    "c": 0.1063,
    "h": 253.2
  },
  "luminance": 0.07375
}

Semantic roles & 50–950 ramp

primary
#1B4E85
secondary
#B88044
accent
#973FE9
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#070A10
muted
#7A7C7F

Preview Lab

Preview with #1B4E85

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

Preview Lab → · Contrast checker → · Palette generator →

#1B4E85 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva