#1B597C#1B597C

#1B597C is a dark, moderate cyan. Relative luminance 0.088; OKLCH L 44.2% C 0.084 H 238.1°. Best body text is #FFFFFF at 7.59:1 contrast (WCAG AA passes).

Color values

HEX#1B597C
RGBrgb(27, 89, 124)
HSLhsl(202, 64%, 30%)
HSVhsv(202, 78%, 49%)
CMYKcmyk(78.2%, 28.2%, 0%, 51.4%)
CIE-LABlab(35.66, -6.69, -25.31)
CIE-LCHlch(35.66, 26.18, 255.20°)
OKLaboklab(44.21% -0.0444 -0.0715)
OKLCHoklch(44.21% 0.084 238.1)
XYZxyz(7.6610, 8.8321, 20.3659)
Luminance0.0883 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B597C #7C3E1B
analogous
#1B7C6E #1B597C #1B297C
triadic
#1B597C #7C1B59 #597C1B
tetradic
#1B597C #6E1B7C #7C3E1B #297C1B
square
#1B597C #6E1B7C #7C3E1B #297C1B
split-complementary
#1B597C #7C1B29 #7C6E1B
monochromatic
#051219 #10354A #1B597C #267DAE #3D9ED5

Accessibility & contrast

On white

7.59
#1B597C on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.77
#1B597C on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B597C
7.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B597C#FFFFFF#000000##FFFFFF
##1B597C1.007.592.777.59
#FFFFFF7.591.0021.001.00
#0000002.7721.001.0021.00
##FFFFFF7.591.0021.001.00

Color blindness preview

Protanopia (red-blind)
#48597E
Deuteranopia (green-blind)
#3B507B
Tritanopia (blue-blind)
#006265
Achromatopsia (no color)
#545454

Design tokens & code

CSS
--color: #1b597c;
/* rgb */ color: rgb(27, 89, 124);
/* oklch */ color: oklch(44.2% 0.084 238.1);
Tailwind
colors: {
  custom: {
    50: '#6787a2',
    500: '#1b597c',
    950: '#000000',
  },
}
SCSS
$custom: #1b597c;
$custom-light: #6787a2;
$custom-dark: #000000;
JSON
{
  "hex": "#1b597c",
  "rgb": {
    "r": 27,
    "g": 89,
    "b": 124
  },
  "hsl": {
    "h": 201.649,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.44213,
    "c": 0.08416,
    "h": 238.1
  },
  "luminance": 0.08833
}

Semantic roles & 50–950 ramp

primary
#1B597C
secondary
#B06A43
accent
#7D41E7
background
#F6F8F9
surface
#EBEFF2
border
#C6CACC
text
#070B0F
muted
#7A7C7E

Preview Lab

Preview with #1B597C

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

Preview Lab → · Contrast checker → · Palette generator →

#1B597C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva