#1B507A#1B507A

#1B507A is a dark, moderate cyan. Relative luminance 0.074; OKLCH L 41.8% C 0.089 H 246.3°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX#1B507A
RGBrgb(27, 80, 122)
HSLhsl(207, 64%, 29%)
HSVhsv(207, 78%, 48%)
CMYKcmyk(77.9%, 34.4%, 0%, 52.2%)
CIE-LABlab(32.65, -1.78, -28.81)
CIE-LCHlch(32.65, 28.86, 266.46°)
OKLaboklab(41.8% -0.0358 -0.0818)
OKLCHoklch(41.8% 0.089 246.3)
XYZxyz(6.8322, 7.3747, 19.4720)
Luminance0.0737 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B507A #7A451B
analogous
#1B7A75 #1B507A #1B217A
triadic
#1B507A #7A1B50 #507A1B
tetradic
#1B507A #751B7A #7A451B #217A1B
square
#1B507A #751B7A #7A451B #217A1B
split-complementary
#1B507A #7A1B21 #7A751B
monochromatic
#061019 #102F48 #1B507A #2671AC #3C91D4

Accessibility & contrast

On white

8.48
#1B507A on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.47
#1B507A on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B507A
8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B507A#FFFFFF#000000##FFFFFF
##1B507A1.008.482.478.48
#FFFFFF8.481.0021.001.00
#0000002.4721.001.0021.00
##FFFFFF8.481.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3D527C
Deuteranopia (green-blind)
#2F4979
Tritanopia (blue-blind)
#005A5F
Achromatopsia (no color)
#4D4D4D

Design tokens & code

CSS
--color: #1b507a;
/* rgb */ color: rgb(27, 80, 122);
/* oklch */ color: oklch(41.8% 0.089 246.3);
Tailwind
colors: {
  custom: {
    50: '#6680a0',
    500: '#1b507a',
    950: '#000000',
  },
}
SCSS
$custom: #1b507a;
$custom-light: #6680a0;
$custom-dark: #000000;
JSON
{
  "hex": "#1b507a",
  "rgb": {
    "r": 27,
    "g": 80,
    "b": 122
  },
  "hsl": {
    "h": 206.526,
    "s": 63.758,
    "l": 29.216
  },
  "oklch": {
    "l": 0.41795,
    "c": 0.08929,
    "h": 246.3
  },
  "luminance": 0.07375
}

Semantic roles & 50–950 ramp

primary
#1B507A
secondary
#AE7243
accent
#8A41E7
background
#F6F7F9
surface
#EBEEF2
border
#C6C9CC
text
#070A0F
muted
#7A7C7E

Preview Lab

Preview with #1B507A

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

Preview Lab → · Contrast checker → · Palette generator →

#1B507A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva