#1C5183#1C5183

#1C5183 is a dark, moderate cyan. Relative luminance 0.078; OKLCH L 42.6% C 0.100 H 250.4°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX#1C5183
RGBrgb(28, 81, 131)
HSLhsl(209, 65%, 31%)
HSVhsv(209, 79%, 51%)
CMYKcmyk(78.6%, 38.2%, 0%, 48.6%)
CIE-LABlab(33.50, 1.26, -33.03)
CIE-LCHlch(33.50, 33.05, 272.19°)
OKLaboklab(42.64% -0.0336 -0.0941)
OKLCHoklch(42.64% 0.1 250.4)
XYZxyz(7.5165, 7.7696, 22.5719)
Luminance0.0777 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C5183 #834E1C
analogous
#1C8381 #1C5183 #1C1D83
triadic
#1C5183 #831C51 #51831C
tetradic
#1C5183 #811C83 #834E1C #1D831C
square
#1C5183 #811C83 #834E1C #1D831C
split-complementary
#1C5183 #831C1D #83811C
monochromatic
#06131E #113251 #1C5183 #2770B5 #438FD7

Accessibility & contrast

On white

8.22
#1C5183 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.55
#1C5183 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C5183
8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C5183#FFFFFF#000000##FFFFFF
##1C51831.008.222.558.22
#FFFFFF8.221.0021.001.00
#0000002.5521.001.0021.00
##FFFFFF8.221.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3A5485
Deuteranopia (green-blind)
#2A4A82
Tritanopia (blue-blind)
#005D63
Achromatopsia (no color)
#4F4F4F

Design tokens & code

CSS
--color: #1c5183;
/* rgb */ color: rgb(28, 81, 131);
/* oklch */ color: oklch(42.6% 0.100 250.4);
Tailwind
colors: {
  custom: {
    50: '#6881a7',
    500: '#1c5183',
    950: '#000000',
  },
}
SCSS
$custom: #1c5183;
$custom-light: #6881a7;
$custom-dark: #000000;
JSON
{
  "hex": "#1c5183",
  "rgb": {
    "r": 28,
    "g": 81,
    "b": 131
  },
  "hsl": {
    "h": 209.126,
    "s": 64.78,
    "l": 31.176
  },
  "oklch": {
    "l": 0.42639,
    "c": 0.09989,
    "h": 250.4
  },
  "luminance": 0.0777
}

Semantic roles & 50–950 ramp

primary
#1C5183
secondary
#B67C45
accent
#9140E8
background
#F6F7FA
surface
#EBEEF4
border
#C6C9CE
text
#070A0F
muted
#7A7C7F

Preview Lab

Preview with #1C5183

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

Preview Lab → · Contrast checker → · Palette generator →

#1C5183 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva