#1C4F83#1C4F83

#1C4F83 is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.1% C 0.102 H 251.9°. Best body text is #FFFFFF at 8.41:1 contrast (WCAG AA passes).

Color values

HEX#1C4F83
RGBrgb(28, 79, 131)
HSLhsl(210, 65%, 31%)
HSVhsv(210, 79%, 51%)
CMYKcmyk(78.6%, 39.7%, 0%, 48.6%)
CIE-LABlab(32.87, 2.57, -34.03)
CIE-LCHlch(32.87, 34.12, 274.33°)
OKLaboklab(42.15% -0.0316 -0.097)
OKLCHoklch(42.15% 0.102 251.9)
XYZxyz(7.3701, 7.4767, 22.5230)
Luminance0.0748 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C4F83 #83501C
analogous
#1C8283 #1C4F83 #1C1C83
triadic
#1C4F83 #831C4F #4F831C
tetradic
#1C4F83 #831C82 #83501C #1C831C
square
#1C4F83 #831C82 #83501C #1C831C
split-complementary
#1C4F83 #831C1C #82831C
monochromatic
#06121E #113151 #1C4F83 #276DB5 #438CD7

Accessibility & contrast

On white

8.41
#1C4F83 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.50
#1C4F83 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C4F83
8.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C4F83#FFFFFF#000000##FFFFFF
##1C4F831.008.412.508.41
#FFFFFF8.411.0021.001.00
#0000002.5021.001.0021.00
##FFFFFF8.411.0021.001.00

Color blindness preview

Protanopia (red-blind)
#375285
Deuteranopia (green-blind)
#264982
Tritanopia (blue-blind)
#005B62
Achromatopsia (no color)
#4D4D4D

Design tokens & code

CSS
--color: #1c4f83;
/* rgb */ color: rgb(28, 79, 131);
/* oklch */ color: oklch(42.1% 0.102 251.9);
Tailwind
colors: {
  custom: {
    50: '#687fa7',
    500: '#1c4f83',
    950: '#000000',
  },
}
SCSS
$custom: #1c4f83;
$custom-light: #687fa7;
$custom-dark: #000000;
JSON
{
  "hex": "#1c4f83",
  "rgb": {
    "r": 28,
    "g": 79,
    "b": 131
  },
  "hsl": {
    "h": 210.291,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.42145,
    "c": 0.10208,
    "h": 251.9
  },
  "luminance": 0.07478
}

Semantic roles & 50–950 ramp

primary
#1C4F83
secondary
#B67E45
accent
#9540E8
background
#F6F7FA
surface
#EBEEF4
border
#C6C9CE
text
#070A0F
muted
#7A7C7F

Preview Lab

Preview with #1C4F83

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

Preview Lab → · Contrast checker → · Palette generator →

#1C4F83 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva