#3580B5#3580B5

#3580B5 is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.7% C 0.110 H 242.9°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3580B5
RGB	rgb(53, 128, 181)
HSL	hsl(205, 55%, 46%)
HSV	hsv(205, 71%, 71%)
CMYK	cmyk(70.7%, 29.3%, 0%, 29%)
CIE-LAB	lab(51.30, -5.51, -34.63)
CIE-LCH	lch(51.30, 35.07, 260.96°)
OKLab	oklab(57.72% -0.0501 -0.0979)
OKLCH	oklch(57.72% 0.11 242.9)
XYZ	xyz(17.5247, 19.5295, 46.5531)
Luminance	0.1953 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3580B5 #B56A35

analogous

#35B5AA #3580B5 #3540B5

triadic

#3580B5 #B53580 #80B535

tetradic

#3580B5 #AA35B5 #B56A35 #40B535

square

#3580B5 #AA35B5 #B56A35 #40B535

split-complementary

#3580B5 #B53540 #B5AA35

monochromatic

#193D56 #275F86 #3580B5 #599ECE #88B9DC

Accessibility & contrast

On white

4.28

#3580B5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#3580B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3580B5

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3580B5	#FFFFFF	#000000	##000000
##3580B5	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6881B7

Deuteranopia (green-blind)

#5675B4

Tritanopia (blue-blind)

#008D93

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3580b5;
/* rgb */ color: rgb(53, 128, 181);
/* oklch */ color: oklch(57.7% 0.110 242.9);

Tailwind

colors: {
  custom: {
    50: '#7ca4cb',
    500: '#3580b5',
    950: '#000000',
  },
}

SCSS

$custom: #3580b5;
$custom-light: #7ca4cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3580b5",
  "rgb": {
    "r": 53,
    "g": 128,
    "b": 181
  },
  "hsl": {
    "h": 204.844,
    "s": 54.701,
    "l": 45.882
  },
  "oklch": {
    "l": 0.57724,
    "c": 0.10994,
    "h": 242.9
  },
  "luminance": 0.19531
}

Semantic roles & 50–950 ramp

primary

#3580B5

secondary

#C69D80

accent

#874ADE

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3580B5

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

Preview Lab → · Contrast checker → · Palette generator →