#1C538B#1C538B

#1C538B is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.6% C 0.109 H 252.1°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX#1C538B
RGBrgb(28, 83, 139)
HSLhsl(210, 66%, 33%)
HSVhsv(210, 80%, 55%)
CMYKcmyk(79.9%, 40.3%, 0%, 45.5%)
CIE-LABlab(34.59, 3.14, -36.19)
CIE-LCHlch(34.59, 36.33, 274.95°)
OKLaboklab(43.65% -0.0333 -0.1033)
OKLCHoklch(43.65% 0.109 252.1)
XYZxyz(8.2306, 8.2965, 25.5887)
Luminance0.0830 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C538B #8B541C
analogous
#1C8B8B #1C538B #1C1C8B
triadic
#1C538B #8B1C53 #538B1C
tetradic
#1C538B #8B1C8B #8B541C #1C8B1C
square
#1C538B #8B1C8B #8B541C #1C8B1C
split-complementary
#1C538B #8B1C1C #8B8B1C
monochromatic
#071625 #123558 #1C538B #2671BE #4790DA

Accessibility & contrast

On white

7.90
#1C538B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.66
#1C538B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C538B
7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C538B#FFFFFF#000000##FFFFFF
##1C538B1.007.902.667.90
#FFFFFF7.901.0021.001.00
#0000002.6621.001.0021.00
##FFFFFF7.901.0021.001.00

Color blindness preview

Protanopia (red-blind)
#38578D
Deuteranopia (green-blind)
#274D8A
Tritanopia (blue-blind)
#006068
Achromatopsia (no color)
#515151

Design tokens & code

CSS
--color: #1c538b;
/* rgb */ color: rgb(28, 83, 139);
/* oklch */ color: oklch(43.6% 0.109 252.1);
Tailwind
colors: {
  custom: {
    50: '#6a82ad',
    500: '#1c538b',
    950: '#000000',
  },
}
SCSS
$custom: #1c538b;
$custom-light: #6a82ad;
$custom-dark: #000000;
JSON
{
  "hex": "#1c538b",
  "rgb": {
    "r": 28,
    "g": 83,
    "b": 139
  },
  "hsl": {
    "h": 210.27,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.43647,
    "c": 0.10858,
    "h": 252.1
  },
  "luminance": 0.08297
}

Semantic roles & 50–950 ramp

primary
#1C538B
secondary
#BC8247
accent
#953EE9
background
#F6F7FA
surface
#ECEEF4
border
#C7C9CE
text
#070A10
muted
#7A7C7F

Preview Lab

Preview with #1C538B

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

Preview Lab → · Contrast checker → · Palette generator →

#1C538B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva