#3391B3#3391B3

#3391B3 is a mid, moderate cyan. Relative luminance 0.242; OKLCH L 61.7% C 0.100 H 226.2°. Best body text is #000000 at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#3391B3
RGB	rgb(51, 145, 179)
HSL	hsl(196, 56%, 45%)
HSV	hsv(196, 72%, 70%)
CMYK	cmyk(71.5%, 19%, 0%, 29.8%)
CIE-LAB	lab(56.29, -16.09, -25.73)
CIE-LCH	lch(56.29, 30.35, 237.97°)
OKLab	oklab(61.65% -0.0691 -0.072)
OKLCH	oklch(61.65% 0.1 226.2)
XYZ	xyz(19.6240, 24.2070, 46.2773)
Luminance	0.2421 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3391B3 #B35533

analogous

#33B395 #3391B3 #3351B3

triadic

#3391B3 #B33391 #91B333

tetradic

#3391B3 #9533B3 #B35533 #51B333

square

#3391B3 #9533B3 #B35533 #51B333

split-complementary

#3391B3 #B33351 #B39533

monochromatic

#184454 #256A83 #3391B3 #55AECE #84C5DC

Accessibility & contrast

On white

3.59

#3391B3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.84

#3391B3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3391B3

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3391B3	#FFFFFF	#000000	##000000
##3391B3	1.00	3.59	5.84	5.84
#FFFFFF	3.59	1.00	21.00	21.00
#000000	5.84	21.00	1.00	1.00
##000000	5.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F8EB5

Deuteranopia (green-blind)

#6D81B3

Tritanopia (blue-blind)

#009B9C

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #3391b3;
/* rgb */ color: rgb(51, 145, 179);
/* oklch */ color: oklch(61.7% 0.100 226.2);

Tailwind

colors: {
  custom: {
    50: '#7cb1c9',
    500: '#3391b3',
    950: '#000000',
  },
}

SCSS

$custom: #3391b3;
$custom-light: #7cb1c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3391b3",
  "rgb": {
    "r": 51,
    "g": 145,
    "b": 179
  },
  "hsl": {
    "h": 195.938,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.61652,
    "c": 0.09984,
    "h": 226.2
  },
  "luminance": 0.24209
}

Semantic roles & 50–950 ramp

primary

#3391B3

secondary

#C6907C

accent

#7149DF

background

#F8FAFC

surface

#EFF5F8

border

#CACFD1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3391B3

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

Preview Lab → · Contrast checker → · Palette generator →