#3580B4#3580B4

#3580B4 is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.7% C 0.109 H 242.4°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX#3580B4
RGBrgb(53, 128, 180)
HSLhsl(205, 55%, 46%)
HSVhsv(205, 71%, 71%)
CMYKcmyk(70.6%, 28.9%, 0%, 29.4%)
CIE-LABlab(51.25, -5.86, -34.13)
CIE-LCHlch(51.25, 34.63, 260.26°)
OKLaboklab(57.67% -0.0504 -0.0964)
OKLCHoklch(57.67% 0.109 242.4)
XYZxyz(17.4224, 19.4886, 46.0146)
Luminance0.1949 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3580B4 #B46935
analogous
#35B4A8 #3580B4 #3540B4
triadic
#3580B4 #B43580 #80B435
tetradic
#3580B4 #A835B4 #B46935 #40B435
square
#3580B4 #A835B4 #B46935 #40B435
split-complementary
#3580B4 #B43540 #B4A835
monochromatic
#193D55 #275E85 #3580B4 #589ECE #88B9DC

Accessibility & contrast

On white

4.29
#3580B4 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.90
#3580B4 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3580B4
4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3580B4#FFFFFF#000000##000000
##3580B41.004.294.904.90
#FFFFFF4.291.0021.0021.00
#0000004.9021.001.001.00
##0000004.9021.001.001.00

Color blindness preview

Protanopia (red-blind)
#6881B6
Deuteranopia (green-blind)
#5775B3
Tritanopia (blue-blind)
#008D92
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #3580b4;
/* rgb */ color: rgb(53, 128, 180);
/* oklch */ color: oklch(57.7% 0.109 242.4);
Tailwind
colors: {
  custom: {
    50: '#7ca4ca',
    500: '#3580b4',
    950: '#000000',
  },
}
SCSS
$custom: #3580b4;
$custom-light: #7ca4ca;
$custom-dark: #000000;
JSON
{
  "hex": "#3580b4",
  "rgb": {
    "r": 53,
    "g": 128,
    "b": 180
  },
  "hsl": {
    "h": 204.567,
    "s": 54.506,
    "l": 45.686
  },
  "oklch": {
    "l": 0.57671,
    "c": 0.10879,
    "h": 242.4
  },
  "luminance": 0.19491
}

Semantic roles & 50–950 ramp

primary
#3580B4
secondary
#C69C7F
accent
#874ADE
background
#F8FAFC
surface
#EFF4F8
border
#CACED1
text
#0B0F13
muted
#7C7F82

Preview Lab

Preview with #3580B4

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

Preview Lab → · Contrast checker → · Palette generator →

#3580B4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva