#1B638D#1B638D

#1B638D is a mid, moderate cyan. Relative luminance 0.111; OKLCH L 47.7% C 0.096 H 239.7°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX#1B638D
RGBrgb(27, 99, 141)
HSLhsl(202, 68%, 33%)
HSVhsv(202, 81%, 55%)
CMYKcmyk(80.9%, 29.8%, 0%, 44.7%)
CIE-LABlab(39.71, -6.32, -29.32)
CIE-LCHlch(39.71, 29.99, 257.83°)
OKLaboklab(47.71% -0.0486 -0.083)
OKLCHoklch(47.71% 0.096 239.7)
XYZxyz(9.7197, 11.0786, 26.8203)
Luminance0.1108 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B638D #8D451B
analogous
#1B8D7E #1B638D #1B2A8D
triadic
#1B638D #8D1B63 #638D1B
tetradic
#1B638D #7E1B8D #8D451B #2A8D1B
square
#1B638D #7E1B8D #8D451B #2A8D1B
split-complementary
#1B638D #8D1B2A #8D7E1B
monochromatic
#071B26 #113F5A #1B638D #2587C0 #47A5DC

Accessibility & contrast

On white

6.53
#1B638D on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.22
#1B638D on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B638D
6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B638D#FFFFFF#000000##FFFFFF
##1B638D1.006.533.226.53
#FFFFFF6.531.0021.001.00
#0000003.2221.001.0021.00
##FFFFFF6.531.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4F638F
Deuteranopia (green-blind)
#40598C
Tritanopia (blue-blind)
#006E72
Achromatopsia (no color)
#5E5E5E

Design tokens & code

CSS
--color: #1b638d;
/* rgb */ color: rgb(27, 99, 141);
/* oklch */ color: oklch(47.7% 0.096 239.7);
Tailwind
colors: {
  custom: {
    50: '#6b8fae',
    500: '#1b638d',
    950: '#000000',
  },
}
SCSS
$custom: #1b638d;
$custom-light: #6b8fae;
$custom-dark: #000000;
JSON
{
  "hex": "#1b638d",
  "rgb": {
    "r": 27,
    "g": 99,
    "b": 141
  },
  "hsl": {
    "h": 202.105,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.47708,
    "c": 0.09614,
    "h": 239.7
  },
  "luminance": 0.1108
}

Semantic roles & 50–950 ramp

primary
#1B638D
secondary
#BD7246
accent
#7D3DEB
background
#F6F8FA
surface
#ECF0F4
border
#C7CBCE
text
#080C10
muted
#7A7D7F

Preview Lab

Preview with #1B638D

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

Preview Lab → · Contrast checker → · Palette generator →

#1B638D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva