#1F738F#1F738F

#1F738F is a mid, moderate cyan. Relative luminance 0.145; OKLCH L 52.0% C 0.088 H 225.2°. Best body text is #FFFFFF at 5.37:1 contrast (WCAG AA passes).

Color values

HEX#1F738F
RGBrgb(31, 115, 143)
HSLhsl(195, 64%, 34%)
HSVhsv(195, 78%, 56%)
CMYKcmyk(78.3%, 19.6%, 0%, 43.9%)
CIE-LABlab(44.99, -14.51, -22.29)
CIE-LCHlch(44.99, 26.59, 236.94°)
OKLaboklab(51.97% -0.0621 -0.0625)
OKLCHoklch(51.97% 0.088 225.2)
XYZxyz(11.6517, 14.5345, 28.1726)
Luminance0.1454 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1F738F #8F3B1F
analogous
#1F8F73 #1F738F #1F3B8F
triadic
#1F738F #8F1F73 #738F1F
tetradic
#1F738F #731F8F #8F3B1F #3B8F1F
square
#1F738F #731F8F #8F3B1F #3B8F1F
split-complementary
#1F738F #8F1F3B #8F731F
monochromatic
#09222A #144B5D #1F738F #2A9BC1 #4FB7D9

Accessibility & contrast

On white

5.37
#1F738F on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.91
#1F738F on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1F738F
5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1F738F#FFFFFF#000000##FFFFFF
##1F738F1.005.373.915.37
#FFFFFF5.371.0021.001.00
#0000003.9121.001.0021.00
##FFFFFF5.371.0021.001.00

Color blindness preview

Protanopia (red-blind)
#647190
Deuteranopia (green-blind)
#55668F
Tritanopia (blue-blind)
#007B7C
Achromatopsia (no color)
#6A6A6A

Design tokens & code

CSS
--color: #1f738f;
/* rgb */ color: rgb(31, 115, 143);
/* oklch */ color: oklch(52.0% 0.088 225.2);
Tailwind
colors: {
  custom: {
    50: '#6d9bb0',
    500: '#1f738f',
    950: '#000000',
  },
}
SCSS
$custom: #1f738f;
$custom-light: #6d9bb0;
$custom-dark: #000000;
JSON
{
  "hex": "#1f738f",
  "rgb": {
    "r": 31,
    "g": 115,
    "b": 143
  },
  "hsl": {
    "h": 195,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.51973,
    "c": 0.08808,
    "h": 225.2
  },
  "luminance": 0.14536
}

Semantic roles & 50–950 ramp

primary
#1F738F
secondary
#BC694E
accent
#6A40E7
background
#F7F9FA
surface
#EDF2F4
border
#C8CCCE
text
#080E10
muted
#7B7E7F

Preview Lab

Preview with #1F738F

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

Preview Lab → · Contrast checker → · Palette generator →

#1F738F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva