#3391B9#3391B9

#3391B9 is a mid, moderate cyan. Relative luminance 0.245; OKLCH L 61.9% C 0.105 H 230.4°. Best body text is #000000 at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#3391B9
RGB	rgb(51, 145, 185)
HSL	hsl(198, 57%, 46%)
HSV	hsv(198, 72%, 73%)
CMYK	cmyk(72.4%, 21.6%, 0%, 27.5%)
CIE-LAB	lab(56.54, -14.07, -28.76)
CIE-LCH	lch(56.54, 32.02, 243.92°)
OKLab	oklab(61.93% -0.0669 -0.0807)
OKLCH	oklch(61.93% 0.105 230.4)
XYZ	xyz(20.2441, 24.4551, 49.5429)
Luminance	0.2446 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3391B9 #B95B33

analogous

#33B99E #3391B9 #334EB9

triadic

#3391B9 #B93391 #91B933

tetradic

#3391B9 #9E33B9 #B95B33 #4EB933

square

#3391B9 #9E33B9 #B95B33 #4EB933

split-complementary

#3391B9 #B9334E #B99E33

monochromatic

#194659 #266B89 #3391B9 #58ADD1 #88C5DE

Accessibility & contrast

On white

3.56

#3391B9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.89

#3391B9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3391B9

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3391B9	#FFFFFF	#000000	##000000
##3391B9	1.00	3.56	5.89	5.89
#FFFFFF	3.56	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)

#7D8FBB

Deuteranopia (green-blind)

#6A82B8

Tritanopia (blue-blind)

#009C9E

Achromatopsia (no color)

#888888

Design tokens & code

CSS

--color: #3391b9;
/* rgb */ color: rgb(51, 145, 185);
/* oklch */ color: oklch(61.9% 0.105 230.4);

Tailwind

colors: {
  custom: {
    50: '#7cb1ce',
    500: '#3391b9',
    950: '#000000',
  },
}

SCSS

$custom: #3391b9;
$custom-light: #7cb1ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3391b9",
  "rgb": {
    "r": 51,
    "g": 145,
    "b": 185
  },
  "hsl": {
    "h": 197.91,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.6193,
    "c": 0.10486,
    "h": 230.4
  },
  "luminance": 0.24457
}

Semantic roles & 50–950 ramp

primary

#3391B9

secondary

#C89580

accent

#7548E0

background

#F8FAFC

surface

#EFF5F9

border

#CACFD2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3391B9

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

Preview Lab → · Contrast checker → · Palette generator →