#1B5D7B#1B5D7B

#1B5D7B is a mid, moderate cyan. Relative luminance 0.095; OKLCH L 45.2% C 0.081 H 232.6°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX#1B5D7B
RGBrgb(27, 93, 123)
HSLhsl(199, 64%, 29%)
HSVhsv(199, 78%, 48%)
CMYKcmyk(78%, 24.4%, 0%, 51.8%)
CIE-LABlab(36.91, -9.50, -22.74)
CIE-LCHlch(36.91, 24.64, 247.33°)
OKLaboklab(45.2% -0.049 -0.064)
OKLCHoklch(45.2% 0.081 232.6)
XYZxyz(7.9401, 9.4908, 20.1485)
Luminance0.0949 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5D7B #7B391B
analogous
#1B7B69 #1B5D7B #1B2D7B
triadic
#1B5D7B #7B1B5D #5D7B1B
tetradic
#1B5D7B #691B7B #7B391B #2D7B1B
square
#1B5D7B #691B7B #7B391B #2D7B1B
split-complementary
#1B5D7B #7B1B2D #7B691B
monochromatic
#061319 #103749 #1B5D7B #2683AD #3CA5D4

Accessibility & contrast

On white

7.25
#1B5D7B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.90
#1B5D7B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5D7B
7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5D7B#FFFFFF#000000##FFFFFF
##1B5D7B1.007.252.907.25
#FFFFFF7.251.0021.001.00
#0000002.9021.001.0021.00
##FFFFFF7.251.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4E5C7C
Deuteranopia (green-blind)
#41537B
Tritanopia (blue-blind)
#006567
Achromatopsia (no color)
#575757

Design tokens & code

CSS
--color: #1b5d7b;
/* rgb */ color: rgb(27, 93, 123);
/* oklch */ color: oklch(45.2% 0.081 232.6);
Tailwind
colors: {
  custom: {
    50: '#678aa1',
    500: '#1b5d7b',
    950: '#000000',
  },
}
SCSS
$custom: #1b5d7b;
$custom-light: #678aa1;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5d7b",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 123
  },
  "hsl": {
    "h": 198.75,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.45195,
    "c": 0.08059,
    "h": 232.6
  },
  "luminance": 0.09492
}

Semantic roles & 50–950 ramp

primary
#1B5D7B
secondary
#AF6543
accent
#7541E7
background
#F6F8F9
surface
#EBF0F2
border
#C6CBCC
text
#070B0F
muted
#7A7C7E

Preview Lab

Preview with #1B5D7B

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5D7B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva