#3391B5#3391B5

#3391B5 is a mid, moderate cyan. Relative luminance 0.243; OKLCH L 61.7% C 0.101 H 227.6°. Best body text is #000000 at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#3391B5
RGB	rgb(51, 145, 181)
HSL	hsl(197, 56%, 45%)
HSV	hsv(197, 72%, 71%)
CMYK	cmyk(71.8%, 19.9%, 0%, 29%)
CIE-LAB	lab(56.38, -15.42, -26.74)
CIE-LCH	lch(56.38, 30.87, 240.02°)
OKLab	oklab(61.74% -0.0684 -0.0749)
OKLCH	oklch(61.74% 0.101 227.6)
XYZ	xyz(19.8278, 24.2885, 47.3503)
Luminance	0.2429 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3391B5 #B55733

analogous

#33B598 #3391B5 #3350B5

triadic

#3391B5 #B53391 #91B533

tetradic

#3391B5 #9833B5 #B55733 #50B533

square

#3391B5 #9833B5 #B55733 #50B533

split-complementary

#3391B5 #B53350 #B59833

monochromatic

#184456 #266B85 #3391B5 #56AECF #86C5DD

Accessibility & contrast

On white

3.58

#3391B5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.86

#3391B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3391B5

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3391B5	#FFFFFF	#000000	##000000
##3391B5	1.00	3.58	5.86	5.86
#FFFFFF	3.58	1.00	21.00	21.00
#000000	5.86	21.00	1.00	1.00
##000000	5.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E8EB7

Deuteranopia (green-blind)

#6C82B5

Tritanopia (blue-blind)

#009B9D

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #3391b5;
/* rgb */ color: rgb(51, 145, 181);
/* oklch */ color: oklch(61.7% 0.101 227.6);

Tailwind

colors: {
  custom: {
    50: '#7cb1cb',
    500: '#3391b5',
    950: '#000000',
  },
}

SCSS

$custom: #3391b5;
$custom-light: #7cb1cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3391b5",
  "rgb": {
    "r": 51,
    "g": 145,
    "b": 181
  },
  "hsl": {
    "h": 196.615,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.61744,
    "c": 0.10145,
    "h": 227.6
  },
  "luminance": 0.24291
}

Semantic roles & 50–950 ramp

primary

#3391B5

secondary

#C6927D

accent

#7248DF

background

#F8FAFC

surface

#EFF5F8

border

#CACFD1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3391B5

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

Preview Lab → · Contrast checker → · Palette generator →