#1D5B8B#1D5B8B

#1D5B8B is a mid, moderate cyan. Relative luminance 0.096; OKLCH L 45.6% C 0.100 H 246.2°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX#1D5B8B
RGBrgb(29, 91, 139)
HSLhsl(206, 65%, 33%)
HSVhsv(206, 79%, 55%)
CMYKcmyk(79.1%, 34.5%, 0%, 45.5%)
CIE-LABlab(37.13, -1.89, -32.17)
CIE-LCHlch(37.13, 32.23, 266.64°)
OKLaboklab(45.64% -0.0404 -0.0914)
OKLCHoklch(45.64% 0.1 246.2)
XYZxyz(8.9062, 9.6064, 25.8059)
Luminance0.0961 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1D5B8B #8B4D1D
analogous
#1D8B84 #1D5B8B #1D248B
triadic
#1D5B8B #8B1D5B #5B8B1D
tetradic
#1D5B8B #841D8B #8B4D1D #248B1D
square
#1D5B8B #841D8B #8B4D1D #248B1D
split-complementary
#1D5B8B #8B1D24 #8B841D
monochromatic
#081926 #123A58 #1D5B8B #287CBE #499AD9

Accessibility & contrast

On white

7.19
#1D5B8B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.92
#1D5B8B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D5B8B
7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1D5B8B#FFFFFF#000000##FFFFFF
##1D5B8B1.007.192.927.19
#FFFFFF7.191.0021.001.00
#0000002.9221.001.0021.00
##FFFFFF7.191.0021.001.00

Color blindness preview

Protanopia (red-blind)
#455D8D
Deuteranopia (green-blind)
#35538A
Tritanopia (blue-blind)
#00676C
Achromatopsia (no color)
#575757

Design tokens & code

CSS
--color: #1d5b8b;
/* rgb */ color: rgb(29, 91, 139);
/* oklch */ color: oklch(45.6% 0.100 246.2);
Tailwind
colors: {
  custom: {
    50: '#6a89ad',
    500: '#1d5b8b',
    950: '#000000',
  },
}
SCSS
$custom: #1d5b8b;
$custom-light: #6a89ad;
$custom-dark: #000000;
JSON
{
  "hex": "#1d5b8b",
  "rgb": {
    "r": 29,
    "g": 91,
    "b": 139
  },
  "hsl": {
    "h": 206.182,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.45643,
    "c": 0.09994,
    "h": 246.2
  },
  "luminance": 0.09607
}

Semantic roles & 50–950 ramp

primary
#1D5B8B
secondary
#BB7B49
accent
#893FE8
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#070B10
muted
#7A7C7F

Preview Lab

Preview with #1D5B8B

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

Preview Lab → · Contrast checker → · Palette generator →

#1D5B8B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva