#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
RGB	rgb(53, 128, 180)
HSL	hsl(205, 55%, 46%)
HSV	hsv(205, 71%, 71%)
CMYK	cmyk(70.6%, 28.9%, 0%, 29.4%)
CIE-LAB	lab(51.25, -5.86, -34.13)
CIE-LCH	lch(51.25, 34.63, 260.26°)
OKLab	oklab(57.67% -0.0504 -0.0964)
OKLCH	oklch(57.67% 0.109 242.4)
XYZ	xyz(17.4224, 19.4886, 46.0146)
Luminance	0.1949 (WCAG relative)
Temperature	cool
Family	cyan

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
##3580B4	1.00	4.29	4.90	4.90
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

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 →