#3391B4#3391B4

#3391B4 is a mid, moderate cyan. Relative luminance 0.242; OKLCH L 61.7% C 0.101 H 226.9°. Best body text is #000000 at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#3391B4
RGB	rgb(51, 145, 180)
HSL	hsl(196, 56%, 45%)
HSV	hsv(196, 72%, 71%)
CMYK	cmyk(71.7%, 19.4%, 0%, 29.4%)
CIE-LAB	lab(56.33, -15.76, -26.23)
CIE-LCH	lch(56.33, 30.60, 239.00°)
OKLab	oklab(61.7% -0.0687 -0.0735)
OKLCH	oklch(61.7% 0.101 226.9)
XYZ	xyz(19.7255, 24.2476, 46.8118)
Luminance	0.2425 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3391B4 #B45633

analogous

#33B496 #3391B4 #3351B4

triadic

#3391B4 #B43391 #91B433

tetradic

#3391B4 #9633B4 #B45633 #51B433

square

#3391B4 #9633B4 #B45633 #51B433

split-complementary

#3391B4 #B43351 #B49633

monochromatic

#184455 #256B84 #3391B4 #55AECF #85C5DC

Accessibility & contrast

On white

3.59

#3391B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.85

#3391B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3391B4

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3391B4	#FFFFFF	#000000	##000000
##3391B4	1.00	3.59	5.85	5.85
#FFFFFF	3.59	1.00	21.00	21.00
#000000	5.85	21.00	1.00	1.00
##000000	5.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E8EB6

Deuteranopia (green-blind)

#6D81B4

Tritanopia (blue-blind)

#009B9C

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #3391b4;
/* rgb */ color: rgb(51, 145, 180);
/* oklch */ color: oklch(61.7% 0.101 226.9);

Tailwind

colors: {
  custom: {
    50: '#7cb1ca',
    500: '#3391b4',
    950: '#000000',
  },
}

SCSS

$custom: #3391b4;
$custom-light: #7cb1ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3391b4",
  "rgb": {
    "r": 51,
    "g": 145,
    "b": 180
  },
  "hsl": {
    "h": 196.279,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.61698,
    "c": 0.10064,
    "h": 226.9
  },
  "luminance": 0.2425
}

Semantic roles & 50–950 ramp

primary

#3391B4

secondary

#C6917D

accent

#7149DF

background

#F8FAFC

surface

#EFF5F8

border

#CACFD1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3391B4

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

Preview Lab → · Contrast checker → · Palette generator →