#1B64B1#1B64B1

#1B64B1 is a mid, vivid cyan. Relative luminance 0.125; OKLCH L 50.2% C 0.141 H 253.7°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX#1B64B1
RGBrgb(27, 100, 177)
HSLhsl(211, 74%, 40%)
HSVhsv(211, 85%, 69%)
CMYKcmyk(84.7%, 43.5%, 0%, 30.6%)
CIE-LABlab(42.03, 7.10, -47.05)
CIE-LCHlch(42.03, 47.58, 278.58°)
OKLaboklab(50.18% -0.0395 -0.1349)
OKLCHoklch(50.18% 0.141 253.7)
XYZxyz(12.9420, 12.5201, 43.3209)
Luminance0.1252 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B64B1 #B1681B
analogous
#1BAFB1 #1B64B1 #1D1BB1
triadic
#1B64B1 #B11B64 #64B11B
tetradic
#1B64B1 #B11BAF #B1681B #1BB11D
square
#1B64B1 #B11BAF #B1681B #1BB11D
split-complementary
#1B64B1 #B11D1B #AFB11B
monochromatic
#0B2847 #13467C #1B64B1 #2B82DF #60A1E7

Accessibility & contrast

On white

5.99
#1B64B1 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.50
#1B64B1 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B64B1
5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B64B1#FFFFFF#000000##FFFFFF
##1B64B11.005.993.505.99
#FFFFFF5.991.0021.001.00
#0000003.5021.001.0021.00
##FFFFFF5.991.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3C6AB4
Deuteranopia (green-blind)
#1F5DAF
Tritanopia (blue-blind)
#007682
Achromatopsia (no color)
#636363

Design tokens & code

CSS
--color: #1b64b1;
/* rgb */ color: rgb(27, 100, 177);
/* oklch */ color: oklch(50.2% 0.141 253.7);
Tailwind
colors: {
  custom: {
    50: '#728fc9',
    500: '#1b64b1',
    950: '#000000',
  },
}
SCSS
$custom: #1b64b1;
$custom-light: #728fc9;
$custom-dark: #000000;
JSON
{
  "hex": "#1b64b1",
  "rgb": {
    "r": 27,
    "g": 100,
    "b": 177
  },
  "hsl": {
    "h": 210.8,
    "s": 73.529,
    "l": 40
  },
  "oklch": {
    "l": 0.50183,
    "c": 0.14056,
    "h": 253.7
  },
  "luminance": 0.12522
}

Semantic roles & 50–950 ramp

primary
#1B64B1
secondary
#CB955D
accent
#9638F0
background
#F7F8FC
surface
#EEF0F8
border
#C9CBD1
text
#090C13
muted
#7B7D82

Preview Lab

Preview with #1B64B1

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

Preview Lab → · Contrast checker → · Palette generator →

#1B64B1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva