#1D5F8D#1D5F8D

#1D5F8D is a mid, moderate cyan. Relative luminance 0.104; OKLCH L 46.8% C 0.099 H 243.8°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX#1D5F8D
RGBrgb(29, 95, 141)
HSLhsl(205, 66%, 33%)
HSVhsv(205, 79%, 55%)
CMYKcmyk(79.4%, 32.6%, 0%, 44.7%)
CIE-LABlab(38.49, -3.63, -31.23)
CIE-LCHlch(38.49, 31.44, 263.38°)
OKLaboklab(46.76% -0.0437 -0.0886)
OKLCHoklch(46.76% 0.099 243.8)
XYZxyz(9.4048, 10.3676, 26.6996)
Luminance0.1037 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1D5F8D #8D4B1D
analogous
#1D8D83 #1D5F8D #1D278D
triadic
#1D5F8D #8D1D5F #5F8D1D
tetradic
#1D5F8D #831D8D #8D4B1D #278D1D
square
#1D5F8D #831D8D #8D4B1D #278D1D
split-complementary
#1D5F8D #8D1D27 #8D831D
monochromatic
#081B27 #133D5A #1D5F8D #2781C0 #4B9FDA

Accessibility & contrast

On white

6.83
#1D5F8D on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.07
#1D5F8D on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1D5F8D
6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1D5F8D#FFFFFF#000000##FFFFFF
##1D5F8D1.006.833.076.83
#FFFFFF6.831.0021.001.00
#0000003.0721.001.0021.00
##FFFFFF6.831.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4A608F
Deuteranopia (green-blind)
#3A568C
Tritanopia (blue-blind)
#006A6F
Achromatopsia (no color)
#5B5B5B

Design tokens & code

CSS
--color: #1d5f8d;
/* rgb */ color: rgb(29, 95, 141);
/* oklch */ color: oklch(46.8% 0.099 243.8);
Tailwind
colors: {
  custom: {
    50: '#6b8cae',
    500: '#1d5f8d',
    950: '#000000',
  },
}
SCSS
$custom: #1d5f8d;
$custom-light: #6b8cae;
$custom-dark: #000000;
JSON
{
  "hex": "#1d5f8d",
  "rgb": {
    "r": 29,
    "g": 95,
    "b": 141
  },
  "hsl": {
    "h": 204.643,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.46757,
    "c": 0.09877,
    "h": 243.8
  },
  "luminance": 0.10369
}

Semantic roles & 50–950 ramp

primary
#1D5F8D
secondary
#BC794A
accent
#853FE9
background
#F6F8FA
surface
#ECF0F4
border
#C7CBCE
text
#080C10
muted
#7A7D7F

Preview Lab

Preview with #1D5F8D

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

Preview Lab → · Contrast checker → · Palette generator →

#1D5F8D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva