#337ECA#337ECA

#337ECA is a mid, vivid cyan. Relative luminance 0.199; OKLCH L 58.4% C 0.138 H 251.7°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#337ECA
RGB	rgb(51, 126, 202)
HSL	hsl(210, 60%, 50%)
HSV	hsv(210, 75%, 79%)
CMYK	cmyk(74.8%, 37.6%, 0%, 20.8%)
CIE-LAB	lab(51.71, 2.96, -46.01)
CIE-LCH	lch(51.71, 46.11, 273.68°)
OKLab	oklab(58.38% -0.0434 -0.1311)
OKLCH	oklch(58.38% 0.138 251.7)
XYZ	xyz(19.4828, 19.8876, 58.6775)
Luminance	0.1989 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337ECA #CA7F33

analogous

#33CACA #337ECA #3433CA

triadic

#337ECA #CA337E #7ECA33

tetradic

#337ECA #CA33CA #CA7F33 #33CA34

square

#337ECA #CA33CA #CA7F33 #33CA34

split-complementary

#337ECA #CA3433 #CACA33

monochromatic

#1A4168 #276099 #337ECA #639DD8 #94BBE4

Accessibility & contrast

On white

4.22

#337ECA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#337ECA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337ECA

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337ECA	#FFFFFF	#000000	##000000
##337ECA	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B83CD

Deuteranopia (green-blind)

#4475C8

Tritanopia (blue-blind)

#00909A

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #337eca;
/* rgb */ color: rgb(51, 126, 202);
/* oklch */ color: oklch(58.4% 0.138 251.7);

Tailwind

colors: {
  custom: {
    50: '#7fa2da',
    500: '#337eca',
    950: '#000000',
  },
}

SCSS

$custom: #337eca;
$custom-light: #7fa2da;
$custom-dark: #000000;

JSON

{
  "hex": "#337eca",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 202
  },
  "hsl": {
    "h": 210.199,
    "s": 59.684,
    "l": 49.608
  },
  "oklch": {
    "l": 0.58375,
    "c": 0.13813,
    "h": 251.7
  },
  "luminance": 0.1989
}

Semantic roles & 50–950 ramp

primary

#337ECA

secondary

#CFAD8A

accent

#9445E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0F15

muted

#7C7E83

Preview Lab

Preview with #337ECA

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

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