#3580B3#3580B3

#3580B3 is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.6% C 0.108 H 241.9°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX#3580B3
RGBrgb(53, 128, 179)
HSLhsl(204, 54%, 45%)
HSVhsv(204, 70%, 70%)
CMYKcmyk(70.4%, 28.5%, 0%, 29.8%)
CIE-LABlab(51.21, -6.21, -33.63)
CIE-LCHlch(51.21, 34.20, 259.53°)
OKLaboklab(57.62% -0.0507 -0.0949)
OKLCHoklch(57.62% 0.108 241.9)
XYZxyz(17.3209, 19.4480, 45.4801)
Luminance0.1945 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3580B3 #B36835
analogous
#35B3A7 #3580B3 #3541B3
triadic
#3580B3 #B33580 #80B335
tetradic
#3580B3 #A735B3 #B36835 #41B335
square
#3580B3 #A735B3 #B36835 #41B335
split-complementary
#3580B3 #B33541 #B3A735
monochromatic
#193C55 #275E84 #3580B3 #589ECD #87B9DB

Accessibility & contrast

On white

4.29
#3580B3 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.89
#3580B3 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3580B3
4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3580B3#FFFFFF#000000##000000
##3580B31.004.294.894.89
#FFFFFF4.291.0021.0021.00
#0000004.8921.001.001.00
##0000004.8921.001.001.00

Color blindness preview

Protanopia (red-blind)
#6981B5
Deuteranopia (green-blind)
#5775B2
Tritanopia (blue-blind)
#008D92
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #3580b3;
/* rgb */ color: rgb(53, 128, 179);
/* oklch */ color: oklch(57.6% 0.108 241.9);
Tailwind
colors: {
  custom: {
    50: '#7ba4ca',
    500: '#3580b3',
    950: '#000000',
  },
}
SCSS
$custom: #3580b3;
$custom-light: #7ba4ca;
$custom-dark: #000000;
JSON
{
  "hex": "#3580b3",
  "rgb": {
    "r": 53,
    "g": 128,
    "b": 179
  },
  "hsl": {
    "h": 204.286,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.57619,
    "c": 0.10765,
    "h": 241.9
  },
  "luminance": 0.1945
}

Semantic roles & 50–950 ramp

primary
#3580B3
secondary
#C59B7F
accent
#864ADE
background
#F8FAFC
surface
#EFF4F8
border
#CACED1
text
#0B0F13
muted
#7C7F82

Preview Lab

Preview with #3580B3

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

Preview Lab → · Contrast checker → · Palette generator →

#3580B3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva