#1B5083#1B5083

#1B5083 is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.4% C 0.101 H 250.9°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX#1B5083
RGBrgb(27, 80, 131)
HSLhsl(209, 66%, 31%)
HSVhsv(209, 79%, 51%)
CMYKcmyk(79.4%, 38.9%, 0%, 48.6%)
CIE-LABlab(33.15, 1.79, -33.58)
CIE-LCHlch(33.15, 33.62, 273.05°)
OKLaboklab(42.36% -0.0332 -0.0957)
OKLCHoklch(42.36% 0.101 250.9)
XYZxyz(7.4158, 7.6082, 22.5460)
Luminance0.0761 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5083 #834E1B
analogous
#1B8382 #1B5083 #1B1C83
triadic
#1B5083 #831B50 #50831B
tetradic
#1B5083 #821B83 #834E1B #1C831B
square
#1B5083 #821B83 #834E1B #1C831B
split-complementary
#1B5083 #831B1C #83821B
monochromatic
#06121E #113150 #1B5083 #256FB6 #418ED8

Accessibility & contrast

On white

8.33
#1B5083 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.52
#1B5083 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5083
8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5083#FFFFFF#000000##FFFFFF
##1B50831.008.332.528.33
#FFFFFF8.331.0021.001.00
#0000002.5221.001.0021.00
##FFFFFF8.331.0021.001.00

Color blindness preview

Protanopia (red-blind)
#385385
Deuteranopia (green-blind)
#284A82
Tritanopia (blue-blind)
#005C63
Achromatopsia (no color)
#4E4E4E

Design tokens & code

CSS
--color: #1b5083;
/* rgb */ color: rgb(27, 80, 131);
/* oklch */ color: oklch(42.4% 0.101 250.9);
Tailwind
colors: {
  custom: {
    50: '#6880a7',
    500: '#1b5083',
    950: '#000000',
  },
}
SCSS
$custom: #1b5083;
$custom-light: #6880a7;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5083",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 131
  },
  "hsl": {
    "h": 209.423,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.4236,
    "c": 0.10131,
    "h": 250.9
  },
  "luminance": 0.07609
}

Semantic roles & 50–950 ramp

primary
#1B5083
secondary
#B67C43
accent
#923FE9
background
#F6F7FA
surface
#EBEEF4
border
#C6C9CE
text
#070A0F
muted
#7A7C7F

Preview Lab

Preview with #1B5083

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5083 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva