#337DD0#337DD0

#337DD0 is a mid, vivid cyan. Relative luminance 0.199; OKLCH L 58.5% C 0.147 H 253.7°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#337DD0
RGB	rgb(51, 125, 208)
HSL	hsl(212, 63%, 51%)
HSV	hsv(212, 75%, 82%)
CMYK	cmyk(75.5%, 39.9%, 0%, 18.4%)
CIE-LAB	lab(51.75, 5.77, -49.36)
CIE-LCH	lch(51.75, 49.70, 276.66°)
OKLab	oklab(58.51% -0.0411 -0.141)
OKLCH	oklch(58.51% 0.147 253.7)
XYZ	xyz(20.0798, 19.9228, 62.4495)
Luminance	0.1993 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337DD0 #D08633

analogous

#33CBD0 #337DD0 #3733D0

triadic

#337DD0 #D0337D #7DD033

tetradic

#337DD0 #D033CB #D08633 #33D037

square

#337DD0 #D033CB #D08633 #33D037

split-complementary

#337DD0 #D03733 #CBD033

monochromatic

#1A426F #255FA1 #337DD0 #659DDB #96BCE7

Accessibility & contrast

On white

4.21

#337DD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.99

#337DD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337DD0

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337DD0	#FFFFFF	#000000	##000000
##337DD0	1.00	4.21	4.99	4.99
#FFFFFF	4.21	1.00	21.00	21.00
#000000	4.99	21.00	1.00	1.00
##000000	4.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5583D3

Deuteranopia (green-blind)

#3C75CE

Tritanopia (blue-blind)

#00919C

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #337dd0;
/* rgb */ color: rgb(51, 125, 208);
/* oklch */ color: oklch(58.5% 0.147 253.7);

Tailwind

colors: {
  custom: {
    50: '#80a2df',
    500: '#337dd0',
    950: '#000000',
  },
}

SCSS

$custom: #337dd0;
$custom-light: #80a2df;
$custom-dark: #000000;

JSON

{
  "hex": "#337dd0",
  "rgb": {
    "r": 51,
    "g": 125,
    "b": 208
  },
  "hsl": {
    "h": 211.72,
    "s": 62.55,
    "l": 50.784
  },
  "oklch": {
    "l": 0.58513,
    "c": 0.14683,
    "h": 253.7
  },
  "luminance": 0.19925
}

Semantic roles & 50–950 ramp

primary

#337DD0

secondary

#D2B18D

accent

#9942E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #337DD0

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

Preview Lab → · Contrast checker → · Palette generator →