#337ECC#337ECC

#337ECC is a mid, vivid cyan. Relative luminance 0.200; OKLCH L 58.5% C 0.141 H 252.2°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#337ECC
RGB	rgb(51, 126, 204)
HSL	hsl(211, 60%, 50%)
HSV	hsv(211, 75%, 80%)
CMYK	cmyk(75%, 38.2%, 0%, 20%)
CIE-LAB	lab(51.82, 3.69, -46.98)
CIE-LCH	lch(51.82, 47.12, 274.49°)
OKLab	oklab(58.5% -0.0429 -0.134)
OKLCH	oklch(58.5% 0.141 252.2)
XYZ	xyz(19.7211, 19.9829, 59.9327)
Luminance	0.1998 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337ECC #CC8133

analogous

#33CBCC #337ECC #3433CC

triadic

#337ECC #CC337E #7ECC33

tetradic

#337ECC #CC33CB #CC8133 #33CC34

square

#337ECC #CC33CB #CC8133 #33CC34

split-complementary

#337ECC #CC3433 #CBCC33

monochromatic

#1B426A #27609B #337ECC #649DD8 #95BCE4

Accessibility & contrast

On white

4.20

#337ECC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#337ECC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337ECC

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337ECC	#FFFFFF	#000000	##000000
##337ECC	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5983CF

Deuteranopia (green-blind)

#4275CA

Tritanopia (blue-blind)

#00909B

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #337ecc;
/* rgb */ color: rgb(51, 126, 204);
/* oklch */ color: oklch(58.5% 0.141 252.2);

Tailwind

colors: {
  custom: {
    50: '#7fa2dc',
    500: '#337ecc',
    950: '#000000',
  },
}

SCSS

$custom: #337ecc;
$custom-light: #7fa2dc;
$custom-dark: #000000;

JSON

{
  "hex": "#337ecc",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 204
  },
  "hsl": {
    "h": 210.588,
    "s": 60,
    "l": 50
  },
  "oklch": {
    "l": 0.58495,
    "c": 0.14067,
    "h": 252.2
  },
  "luminance": 0.19985
}

Semantic roles & 50–950 ramp

primary

#337ECC

secondary

#D0AE8B

accent

#9545E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0F15

muted

#7D7E83

Preview Lab

Preview with #337ECC

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

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