#15578D#15578D

#15578D is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.6% C 0.109 H 248.5°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX#15578D
RGBrgb(21, 87, 141)
HSLhsl(207, 74%, 32%)
HSVhsv(207, 85%, 55%)
CMYKcmyk(85.1%, 38.3%, 0%, 44.7%)
CIE-LABlab(35.79, 0.58, -35.52)
CIE-LCHlch(35.79, 35.53, 270.94°)
OKLaboklab(44.57% -0.04 -0.1014)
OKLCHoklch(44.57% 0.109 248.5)
XYZxyz(8.5233, 8.8978, 26.4624)
Luminance0.0890 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#15578D #8D4B15
analogous
#158D87 #15578D #151B8D
triadic
#15578D #8D1557 #578D15
tetradic
#15578D #87158D #8D4B15 #1B8D15
square
#15578D #87158D #8D4B15 #1B8D15
split-complementary
#15578D #8D151B #8D8715
monochromatic
#051522 #0D3658 #15578D #1D78C2 #3B97E2

Accessibility & contrast

On white

7.55
#15578D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.78
#15578D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #15578D
7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##15578D#FFFFFF#000000##FFFFFF
##15578D1.007.552.787.55
#FFFFFF7.551.0021.001.00
#0000002.7821.001.0021.00
##FFFFFF7.551.0021.001.00

Color blindness preview

Protanopia (red-blind)
#3D5A8F
Deuteranopia (green-blind)
#2B4F8C
Tritanopia (blue-blind)
#00646B
Achromatopsia (no color)
#545454

Design tokens & code

CSS
--color: #15578d;
/* rgb */ color: rgb(21, 87, 141);
/* oklch */ color: oklch(44.6% 0.109 248.5);
Tailwind
colors: {
  custom: {
    50: '#6986ae',
    500: '#15578d',
    950: '#000000',
  },
}
SCSS
$custom: #15578d;
$custom-light: #6986ae;
$custom-dark: #000000;
JSON
{
  "hex": "#15578d",
  "rgb": {
    "r": 21,
    "g": 87,
    "b": 141
  },
  "hsl": {
    "h": 207,
    "s": 74.074,
    "l": 31.765
  },
  "oklch": {
    "l": 0.44571,
    "c": 0.10896,
    "h": 248.5
  },
  "luminance": 0.08899
}

Semantic roles & 50–950 ramp

primary
#15578D
secondary
#C1783D
accent
#8B37F1
background
#F6F8FA
surface
#ECEFF4
border
#C7CACE
text
#070B10
muted
#7A7C7F

Preview Lab

Preview with #15578D

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

Preview Lab → · Contrast checker → · Palette generator →

#15578D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva