#3591B7#3591B7

#3591B7 is a mid, moderate cyan. Relative luminance 0.244; OKLCH L 61.9% C 0.102 H 229.4°. Best body text is #000000 at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#3591B7
RGB	rgb(53, 145, 183)
HSL	hsl(198, 55%, 46%)
HSV	hsv(198, 71%, 72%)
CMYK	cmyk(71%, 20.8%, 0%, 28.2%)
CIE-LAB	lab(56.51, -14.47, -27.66)
CIE-LCH	lch(56.51, 31.22, 242.39°)
OKLab	oklab(61.89% -0.0666 -0.0776)
OKLCH	oklch(61.89% 0.102 229.4)
XYZ	xyz(20.1374, 24.4243, 48.4436)
Luminance	0.2443 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3591B7 #B75B35

analogous

#35B79C #3591B7 #3550B7

triadic

#3591B7 #B73591 #91B735

tetradic

#3591B7 #9C35B7 #B75B35 #50B735

square

#3591B7 #9C35B7 #B75B35 #50B735

split-complementary

#3591B7 #B73550 #B79C35

monochromatic

#1A4658 #276B88 #3591B7 #5AADCF #89C5DD

Accessibility & contrast

On white

3.57

#3591B7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.89

#3591B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3591B7

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3591B7	#FFFFFF	#000000	##000000
##3591B7	1.00	3.57	5.89	5.89
#FFFFFF	3.57	1.00	21.00	21.00
#000000	5.89	21.00	1.00	1.00
##000000	5.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D8FB9

Deuteranopia (green-blind)

#6C82B6

Tritanopia (blue-blind)

#009C9E

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #3591b7;
/* rgb */ color: rgb(53, 145, 183);
/* oklch */ color: oklch(61.9% 0.102 229.4);

Tailwind

colors: {
  custom: {
    50: '#7db1cc',
    500: '#3591b7',
    950: '#000000',
  },
}

SCSS

$custom: #3591b7;
$custom-light: #7db1cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3591b7",
  "rgb": {
    "r": 53,
    "g": 145,
    "b": 183
  },
  "hsl": {
    "h": 197.538,
    "s": 55.085,
    "l": 46.275
  },
  "oklch": {
    "l": 0.61893,
    "c": 0.10225,
    "h": 229.4
  },
  "luminance": 0.24427
}

Semantic roles & 50–950 ramp

primary

#3591B7

secondary

#C79581

accent

#7549DE

background

#F8FAFC

surface

#EFF5F9

border

#CACFD2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3591B7

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

Preview Lab → · Contrast checker → · Palette generator →