#3591B3#3591B3

#3591B3 is a mid, moderate cyan. Relative luminance 0.243; OKLCH L 61.7% C 0.099 H 226.5°. Best body text is #000000 at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#3591B3
RGB	rgb(53, 145, 179)
HSL	hsl(196, 54%, 45%)
HSV	hsv(196, 70%, 70%)
CMYK	cmyk(70.4%, 19%, 0%, 29.8%)
CIE-LAB	lab(56.35, -15.81, -25.64)
CIE-LCH	lch(56.35, 30.12, 238.35°)
OKLab	oklab(61.71% -0.0681 -0.0718)
OKLCH	oklch(61.71% 0.099 226.5)
XYZ	xyz(19.7270, 24.2601, 46.2821)
Luminance	0.2426 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3591B3 #B35735

analogous

#35B396 #3591B3 #3552B3

triadic

#3591B3 #B33591 #91B335

tetradic

#3591B3 #9635B3 #B35735 #52B335

square

#3591B3 #9635B3 #B35735 #52B335

split-complementary

#3591B3 #B33552 #B39635

monochromatic

#194455 #276B84 #3591B3 #58AECD #87C5DB

Accessibility & contrast

On white

3.59

#3591B3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.85

#3591B3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3591B3

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3591B3	#FFFFFF	#000000	##000000
##3591B3	1.00	3.59	5.85	5.85
#FFFFFF	3.59	1.00	21.00	21.00
#000000	5.85	21.00	1.00	1.00
##000000	5.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F8EB5

Deuteranopia (green-blind)

#6D82B3

Tritanopia (blue-blind)

#009B9C

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #3591b3;
/* rgb */ color: rgb(53, 145, 179);
/* oklch */ color: oklch(61.7% 0.099 226.5);

Tailwind

colors: {
  custom: {
    50: '#7cb1c9',
    500: '#3591b3',
    950: '#000000',
  },
}

SCSS

$custom: #3591b3;
$custom-light: #7cb1c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3591b3",
  "rgb": {
    "r": 53,
    "g": 145,
    "b": 179
  },
  "hsl": {
    "h": 196.19,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.61709,
    "c": 0.09894,
    "h": 226.5
  },
  "luminance": 0.24262
}

Semantic roles & 50–950 ramp

primary

#3591B3

secondary

#C5927F

accent

#724ADE

background

#F8FAFC

surface

#EFF5F8

border

#CACFD1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3591B3

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

Preview Lab → · Contrast checker → · Palette generator →