#337FCC#337FCC

#337FCC is a mid, vivid cyan. Relative luminance 0.202; OKLCH L 58.7% C 0.140 H 251.7°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#337FCC
RGB	rgb(51, 127, 204)
HSL	hsl(210, 60%, 50%)
HSV	hsv(210, 75%, 80%)
CMYK	cmyk(75%, 37.7%, 0%, 20%)
CIE-LAB	lab(52.11, 3.08, -46.52)
CIE-LCH	lch(52.11, 46.62, 273.79°)
OKLab	oklab(58.72% -0.0438 -0.1326)
OKLCH	oklch(58.72% 0.14 251.7)
XYZ	xyz(19.8496, 20.2399, 59.9756)
Luminance	0.2024 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FCC #CC8033

analogous

#33CCCC #337FCC #3333CC

triadic

#337FCC #CC337F #7FCC33

tetradic

#337FCC #CC33CC #CC8033 #33CC33

square

#337FCC #CC33CC #CC8033 #33CC33

split-complementary

#337FCC #CC3333 #CCCC33

monochromatic

#1B426A #27619B #337FCC #649ED8 #95BCE4

Accessibility & contrast

On white

4.16

#337FCC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#337FCC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FCC

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FCC	#FFFFFF	#000000	##000000
##337FCC	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B84CF

Deuteranopia (green-blind)

#4476CA

Tritanopia (blue-blind)

#00919C

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #337fcc;
/* rgb */ color: rgb(51, 127, 204);
/* oklch */ color: oklch(58.7% 0.140 251.7);

Tailwind

colors: {
  custom: {
    50: '#7fa3dc',
    500: '#337fcc',
    950: '#000000',
  },
}

SCSS

$custom: #337fcc;
$custom-light: #7fa3dc;
$custom-dark: #000000;

JSON

{
  "hex": "#337fcc",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 204
  },
  "hsl": {
    "h": 210.196,
    "s": 60,
    "l": 50
  },
  "oklch": {
    "l": 0.58721,
    "c": 0.13966,
    "h": 251.7
  },
  "luminance": 0.20242
}

Semantic roles & 50–950 ramp

primary

#337FCC

secondary

#D0AE8B

accent

#9445E3

background

#F8FAFD

surface

#F0F3FB

border

#CBCDD4

text

#0C0F15

muted

#7D7F83

Preview Lab

Preview with #337FCC

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

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