#1B5D83#1B5D83

#1B5D83 is a mid, moderate cyan. Relative luminance 0.097; OKLCH L 45.6% C 0.089 H 238.9°. Best body text is #FFFFFF at 7.14:1 contrast (WCAG AA passes).

Color values

HEX#1B5D83
RGBrgb(27, 93, 131)
HSLhsl(202, 66%, 31%)
HSVhsv(202, 79%, 51%)
CMYKcmyk(79.4%, 29%, 0%, 48.6%)
CIE-LABlab(37.30, -6.47, -27.04)
CIE-LCHlch(37.30, 27.80, 256.54°)
OKLaboklab(45.63% -0.046 -0.0764)
OKLCHoklch(45.63% 0.089 238.9)
XYZxyz(8.4615, 9.6994, 22.8945)
Luminance0.0970 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5D83 #83411B
analogous
#1B8375 #1B5D83 #1B2983
triadic
#1B5D83 #831B5D #5D831B
tetradic
#1B5D83 #751B83 #83411B #29831B
square
#1B5D83 #751B83 #83411B #29831B
split-complementary
#1B5D83 #831B29 #83751B
monochromatic
#06151E #113950 #1B5D83 #2581B6 #41A1D8

Accessibility & contrast

On white

7.14
#1B5D83 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.94
#1B5D83 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5D83
7.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5D83#FFFFFF#000000##FFFFFF
##1B5D831.007.142.947.14
#FFFFFF7.141.0021.001.00
#0000002.9421.001.0021.00
##FFFFFF7.141.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4B5D85
Deuteranopia (green-blind)
#3D5382
Tritanopia (blue-blind)
#00676A
Achromatopsia (no color)
#585858

Design tokens & code

CSS
--color: #1b5d83;
/* rgb */ color: rgb(27, 93, 131);
/* oklch */ color: oklch(45.6% 0.089 238.9);
Tailwind
colors: {
  custom: {
    50: '#688aa7',
    500: '#1b5d83',
    950: '#000000',
  },
}
SCSS
$custom: #1b5d83;
$custom-light: #688aa7;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5d83",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 131
  },
  "hsl": {
    "h": 201.923,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.45628,
    "c": 0.08924,
    "h": 238.9
  },
  "luminance": 0.097
}

Semantic roles & 50–950 ramp

primary
#1B5D83
secondary
#B66D43
accent
#7D3FE9
background
#F6F8FA
surface
#ECF0F4
border
#C7CBCE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #1B5D83

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5D83 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva