#1B5B85#1B5B85

#1B5B85 is a mid, moderate cyan. Relative luminance 0.094; OKLCH L 45.2% C 0.093 H 242.3°. Best body text is #FFFFFF at 7.29:1 contrast (WCAG AA passes).

Color values

HEX#1B5B85
RGBrgb(27, 91, 133)
HSLhsl(204, 66%, 31%)
HSVhsv(204, 80%, 52%)
CMYKcmyk(79.7%, 31.6%, 0%, 47.8%)
CIE-LABlab(36.76, -4.47, -29.10)
CIE-LCHlch(36.76, 29.45, 261.28°)
OKLaboklab(45.23% -0.0434 -0.0825)
OKLCHoklch(45.23% 0.093 242.3)
XYZxyz(8.4251, 9.4076, 23.5576)
Luminance0.0941 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5B85 #85451B
analogous
#1B857A #1B5B85 #1B2685
triadic
#1B5B85 #851B5B #5B851B
tetradic
#1B5B85 #7A1B85 #85451B #26851B
square
#1B5B85 #7A1B85 #85451B #26851B
split-complementary
#1B5B85 #851B26 #857A1B
monochromatic
#06151F #113852 #1B5B85 #257EB8 #429DD9

Accessibility & contrast

On white

7.29
#1B5B85 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.88
#1B5B85 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5B85
7.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5B85#FFFFFF#000000##FFFFFF
##1B5B851.007.292.887.29
#FFFFFF7.291.0021.001.00
#0000002.8821.001.0021.00
##FFFFFF7.291.0021.001.00

Color blindness preview

Protanopia (red-blind)
#475C87
Deuteranopia (green-blind)
#395284
Tritanopia (blue-blind)
#00656A
Achromatopsia (no color)
#565656

Design tokens & code

CSS
--color: #1b5b85;
/* rgb */ color: rgb(27, 91, 133);
/* oklch */ color: oklch(45.2% 0.093 242.3);
Tailwind
colors: {
  custom: {
    50: '#6989a8',
    500: '#1b5b85',
    950: '#000000',
  },
}
SCSS
$custom: #1b5b85;
$custom-light: #6989a8;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5b85",
  "rgb": {
    "r": 27,
    "g": 91,
    "b": 133
  },
  "hsl": {
    "h": 203.774,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.45233,
    "c": 0.09318,
    "h": 242.3
  },
  "luminance": 0.09409
}

Semantic roles & 50–950 ramp

primary
#1B5B85
secondary
#B87244
accent
#823FE9
background
#F6F8FA
surface
#ECF0F4
border
#C7CBCE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #1B5B85

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5B85 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva