#1B4F63#1B4F63

#1B4F63 is a dark, moderate cyan. Relative luminance 0.067; OKLCH L 40.3% C 0.064 H 227.2°. Best body text is #FFFFFF at 8.95:1 contrast (WCAG AA passes).

Color values

HEX#1B4F63
RGBrgb(27, 79, 99)
HSLhsl(197, 57%, 25%)
HSVhsv(197, 73%, 39%)
CMYKcmyk(72.7%, 20.2%, 0%, 61.2%)
CIE-LABlab(31.17, -9.95, -16.67)
CIE-LCHlch(31.17, 19.41, 239.17°)
OKLaboklab(40.25% -0.0432 -0.0466)
OKLCHoklch(40.25% 0.064 227.2)
XYZxyz(5.4992, 6.7252, 12.8102)
Luminance0.0673 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B4F63 #632F1B
analogous
#1B6353 #1B4F63 #1B2B63
triadic
#1B4F63 #631B4F #4F631B
tetradic
#1B4F63 #531B63 #632F1B #2B631B
square
#1B4F63 #531B63 #632F1B #2B631B
split-complementary
#1B4F63 #631B2B #63531B
monochromatic
#071318 #0E2933 #1B4F63 #287593 #359CC3

Accessibility & contrast

On white

8.95
#1B4F63 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.35
#1B4F63 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F63
8.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B4F63#FFFFFF#000000##FFFFFF
##1B4F631.008.952.358.95
#FFFFFF8.951.0021.001.00
#0000002.3521.001.0021.00
##FFFFFF8.951.0021.001.00

Color blindness preview

Protanopia (red-blind)
#444D64
Deuteranopia (green-blind)
#3A4663
Tritanopia (blue-blind)
#005556
Achromatopsia (no color)
#494949

Design tokens & code

CSS
--color: #1b4f63;
/* rgb */ color: rgb(27, 79, 99);
/* oklch */ color: oklch(40.3% 0.064 227.2);
Tailwind
colors: {
  custom: {
    50: '#62808f',
    500: '#1b4f63',
    950: '#000000',
  },
}
SCSS
$custom: #1b4f63;
$custom-light: #62808f;
$custom-dark: #000000;
JSON
{
  "hex": "#1b4f63",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 99
  },
  "hsl": {
    "h": 196.667,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.40251,
    "c": 0.06357,
    "h": 227.2
  },
  "luminance": 0.06726
}

Semantic roles & 50–950 ramp

primary
#1B4F63
secondary
#985A41
accent
#7247E0
background
#F6F7F8
surface
#EBEEF0
border
#C6C9CB
text
#050A0C
muted
#7A7C7D

Preview Lab

Preview with #1B4F63

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

Preview Lab → · Contrast checker → · Palette generator →

#1B4F63 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva