#1B5D7F#1B5D7F

#1B5D7F is a mid, moderate cyan. Relative luminance 0.096; OKLCH L 45.4% C 0.085 H 235.9°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX#1B5D7F
RGBrgb(27, 93, 127)
HSLhsl(200, 65%, 30%)
HSVhsv(200, 79%, 50%)
CMYKcmyk(78.7%, 26.8%, 0%, 50.2%)
CIE-LABlab(37.10, -7.99, -24.90)
CIE-LCHlch(37.10, 26.15, 252.20°)
OKLaboklab(45.41% -0.0475 -0.0702)
OKLCHoklch(45.41% 0.085 235.9)
XYZxyz(8.1956, 9.5930, 21.4943)
Luminance0.0959 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5D7F #7F3D1B
analogous
#1B7F6F #1B5D7F #1B2B7F
triadic
#1B5D7F #7F1B5D #5D7F1B
tetradic
#1B5D7F #6F1B7F #7F3D1B #2B7F1B
square
#1B5D7F #6F1B7F #7F3D1B #2B7F1B
split-complementary
#1B5D7F #7F1B2B #7F6F1B
monochromatic
#06131A #10384D #1B5D7F #2682B1 #3EA2D6

Accessibility & contrast

On white

7.19
#1B5D7F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.92
#1B5D7F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5D7F
7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5D7F#FFFFFF#000000##FFFFFF
##1B5D7F1.007.192.927.19
#FFFFFF7.191.0021.001.00
#0000002.9221.001.0021.00
##FFFFFF7.191.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4D5D81
Deuteranopia (green-blind)
#3F537E
Tritanopia (blue-blind)
#006669
Achromatopsia (no color)
#575757

Design tokens & code

CSS
--color: #1b5d7f;
/* rgb */ color: rgb(27, 93, 127);
/* oklch */ color: oklch(45.4% 0.085 235.9);
Tailwind
colors: {
  custom: {
    50: '#688aa4',
    500: '#1b5d7f',
    950: '#000000',
  },
}
SCSS
$custom: #1b5d7f;
$custom-light: #688aa4;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5d7f",
  "rgb": {
    "r": 27,
    "g": 93,
    "b": 127
  },
  "hsl": {
    "h": 200.4,
    "s": 64.935,
    "l": 30.196
  },
  "oklch": {
    "l": 0.45408,
    "c": 0.08478,
    "h": 235.9
  },
  "luminance": 0.09594
}

Semantic roles & 50–950 ramp

primary
#1B5D7F
secondary
#B36943
accent
#7940E8
background
#F6F8FA
surface
#EBF0F4
border
#C6CBCE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #1B5D7F

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5D7F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva