#3391CB#3391CB

#3391CB is a light, vivid cyan. Relative luminance 0.253; OKLCH L 62.8% C 0.123 H 240.3°. Best body text is #000000 at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#3391CB
RGB	rgb(51, 145, 203)
HSL	hsl(203, 60%, 50%)
HSV	hsv(203, 75%, 80%)
CMYK	cmyk(74.9%, 28.6%, 0%, 20.4%)
CIE-LAB	lab(57.33, -7.86, -37.71)
CIE-LCH	lch(57.33, 38.52, 258.23°)
OKLab	oklab(62.82% -0.0608 -0.1066)
OKLCH	oklch(62.82% 0.123 240.3)
XYZ	xyz(22.2659, 25.2638, 60.1912)
Luminance	0.2527 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3391CB #CB6D33

analogous

#33CBB9 #3391CB #3345CB

triadic

#3391CB #CB3391 #91CB33

tetradic

#3391CB #B933CB #CB6D33 #45CB33

square

#3391CB #B933CB #CB6D33 #45CB33

split-complementary

#3391CB #CB3345 #CBB933

monochromatic

#1A4B69 #276E9A #3391CB #63ABD8 #94C6E4

Accessibility & contrast

On white

3.47

#3391CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.05

#3391CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3391CB

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3391CB	#FFFFFF	#000000	##000000
##3391CB	1.00	3.47	6.05	6.05
#FFFFFF	3.47	1.00	21.00	21.00
#000000	6.05	21.00	1.00	1.00
##000000	6.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7692CE

Deuteranopia (green-blind)

#6183CA

Tritanopia (blue-blind)

#009FA5

Achromatopsia (no color)

#8A8A8A

Design tokens & code

CSS

--color: #3391cb;
/* rgb */ color: rgb(51, 145, 203);
/* oklch */ color: oklch(62.8% 0.123 240.3);

Tailwind

colors: {
  custom: {
    50: '#7fb1db',
    500: '#3391cb',
    950: '#000000',
  },
}

SCSS

$custom: #3391cb;
$custom-light: #7fb1db;
$custom-dark: #000000;

JSON

{
  "hex": "#3391cb",
  "rgb": {
    "r": 51,
    "g": 145,
    "b": 203
  },
  "hsl": {
    "h": 202.895,
    "s": 59.843,
    "l": 49.804
  },
  "oklch": {
    "l": 0.6282,
    "c": 0.12272,
    "h": 240.3
  },
  "luminance": 0.25266
}

Semantic roles & 50–950 ramp

primary

#3391CB

secondary

#CFA58B

accent

#8145E3

background

#F8FAFD

surface

#F0F4FB

border

#CBCED4

text

#0C1015

muted

#7D7F83

Preview Lab

Preview with #3391CB

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

Preview Lab → · Contrast checker → · Palette generator →