#1B528C#1B528C

#1B528C is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.4% C 0.111 H 252.9°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX#1B528C
RGBrgb(27, 82, 140)
HSLhsl(211, 68%, 33%)
HSVhsv(211, 81%, 55%)
CMYKcmyk(80.7%, 41.4%, 0%, 45.1%)
CIE-LABlab(34.31, 4.07, -37.25)
CIE-LCHlch(34.31, 37.47, 276.24°)
OKLaboklab(43.44% -0.0327 -0.1065)
OKLCHoklch(43.44% 0.111 252.9)
XYZxyz(8.2011, 8.1601, 25.9487)
Luminance0.0816 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B528C #8C551B
analogous
#1B8B8C #1B528C #1C1B8C
triadic
#1B528C #8C1B52 #528C1B
tetradic
#1B528C #8C1B8B #8C551B #1B8C1C
square
#1B528C #8C1B8B #8C551B #1B8C1C
split-complementary
#1B528C #8C1C1B #8B8C1B
monochromatic
#071625 #113459 #1B528C #2570BF #468FDB

Accessibility & contrast

On white

7.98
#1B528C on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.63
#1B528C on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B528C
7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B528C#FFFFFF#000000##FFFFFF
##1B528C1.007.982.637.98
#FFFFFF7.981.0021.001.00
#0000002.6321.001.0021.00
##FFFFFF7.981.0021.001.00

Color blindness preview

Protanopia (red-blind)
#36568E
Deuteranopia (green-blind)
#234C8B
Tritanopia (blue-blind)
#006068
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #1b528c;
/* rgb */ color: rgb(27, 82, 140);
/* oklch */ color: oklch(43.4% 0.111 252.9);
Tailwind
colors: {
  custom: {
    50: '#6a82ae',
    500: '#1b528c',
    950: '#000000',
  },
}
SCSS
$custom: #1b528c;
$custom-light: #6a82ae;
$custom-dark: #000000;
JSON
{
  "hex": "#1b528c",
  "rgb": {
    "r": 27,
    "g": 82,
    "b": 140
  },
  "hsl": {
    "h": 210.796,
    "s": 67.665,
    "l": 32.745
  },
  "oklch": {
    "l": 0.43441,
    "c": 0.11139,
    "h": 252.9
  },
  "luminance": 0.08161
}

Semantic roles & 50–950 ramp

primary
#1B528C
secondary
#BD8346
accent
#963DEB
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#070A10
muted
#7A7C7F

Preview Lab

Preview with #1B528C

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

Preview Lab → · Contrast checker → · Palette generator →

#1B528C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva