#1B528D#1B528D

#1B528D is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.5% C 0.113 H 253.3°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX#1B528D
RGBrgb(27, 82, 141)
HSLhsl(211, 68%, 33%)
HSVhsv(211, 81%, 55%)
CMYKcmyk(80.9%, 41.8%, 0%, 44.7%)
CIE-LABlab(34.37, 4.47, -37.76)
CIE-LCHlch(34.37, 38.03, 276.76°)
OKLaboklab(43.51% -0.0325 -0.108)
OKLCHoklch(43.51% 0.113 253.3)
XYZxyz(8.2752, 8.1897, 26.3388)
Luminance0.0819 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B528D #8D561B
analogous
#1B8B8D #1B528D #1D1B8D
triadic
#1B528D #8D1B52 #528D1B
tetradic
#1B528D #8D1B8B #8D561B #1B8D1D
square
#1B528D #8D1B8B #8D561B #1B8D1D
split-complementary
#1B528D #8D1D1B #8B8D1B
monochromatic
#071626 #11345A #1B528D #2570C0 #478FDC

Accessibility & contrast

On white

7.96
#1B528D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.64
#1B528D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B528D
7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B528D#FFFFFF#000000##FFFFFF
##1B528D1.007.962.647.96
#FFFFFF7.961.0021.001.00
#0000002.6421.001.0021.00
##FFFFFF7.961.0021.001.00

Color blindness preview

Protanopia (red-blind)
#35568F
Deuteranopia (green-blind)
#224C8C
Tritanopia (blue-blind)
#006068
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #1b528d;
/* rgb */ color: rgb(27, 82, 141);
/* oklch */ color: oklch(43.5% 0.113 253.3);
Tailwind
colors: {
  custom: {
    50: '#6a82af',
    500: '#1b528d',
    950: '#000000',
  },
}
SCSS
$custom: #1b528d;
$custom-light: #6a82af;
$custom-dark: #000000;
JSON
{
  "hex": "#1b528d",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 141
  },
  "hsl": {
    "h": 211.053,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.43508,
    "c": 0.11275,
    "h": 253.3
  },
  "luminance": 0.08191
}

Semantic roles & 50–950 ramp

primary
#1B528D
secondary
#BD8446
accent
#973DEB
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#070A10
muted
#7A7C7F

Preview Lab

Preview with #1B528D

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

Preview Lab → · Contrast checker → · Palette generator →

#1B528D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva