#1B5A7D#1B5A7D

#1B5A7D is a dark, moderate cyan. Relative luminance 0.090; OKLCH L 44.5% C 0.085 H 237.8°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX#1B5A7D
RGBrgb(27, 90, 125)
HSLhsl(201, 64%, 30%)
HSVhsv(201, 78%, 49%)
CMYKcmyk(78.4%, 28%, 0%, 51%)
CIE-LABlab(36.03, -6.92, -25.34)
CIE-LCHlch(36.03, 26.27, 254.73°)
OKLaboklab(44.53% -0.0451 -0.0716)
OKLCHoklch(44.53% 0.085 237.8)
XYZxyz(7.8084, 9.0251, 20.7285)
Luminance0.0903 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B5A7D #7D3E1B
analogous
#1B7D6F #1B5A7D #1B297D
triadic
#1B5A7D #7D1B5A #5A7D1B
tetradic
#1B5A7D #6F1B7D #7D3E1B #297D1B
square
#1B5A7D #6F1B7D #7D3E1B #297D1B
split-complementary
#1B5A7D #7D1B29 #7D6F1B
monochromatic
#051219 #10364B #1B5A7D #267EAF #3D9FD5

Accessibility & contrast

On white

7.49
#1B5A7D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.81
#1B5A7D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5A7D
7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B5A7D#FFFFFF#000000##FFFFFF
##1B5A7D1.007.492.817.49
#FFFFFF7.491.0021.001.00
#0000002.8121.001.0021.00
##FFFFFF7.491.0021.001.00

Color blindness preview

Protanopia (red-blind)
#495A7F
Deuteranopia (green-blind)
#3C517C
Tritanopia (blue-blind)
#006366
Achromatopsia (no color)
#555555

Design tokens & code

CSS
--color: #1b5a7d;
/* rgb */ color: rgb(27, 90, 125);
/* oklch */ color: oklch(44.5% 0.085 237.8);
Tailwind
colors: {
  custom: {
    50: '#6788a3',
    500: '#1b5a7d',
    950: '#000000',
  },
}
SCSS
$custom: #1b5a7d;
$custom-light: #6788a3;
$custom-dark: #000000;
JSON
{
  "hex": "#1b5a7d",
  "rgb": {
    "r": 27,
    "g": 90,
    "b": 125
  },
  "hsl": {
    "h": 201.429,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.44526,
    "c": 0.08459,
    "h": 237.8
  },
  "luminance": 0.09026
}

Semantic roles & 50–950 ramp

primary
#1B5A7D
secondary
#B16A43
accent
#7C40E7
background
#F6F8FA
surface
#EBEFF3
border
#C6CACD
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #1B5A7D

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

Preview Lab → · Contrast checker → · Palette generator →

#1B5A7D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva