#337EC5#337EC5

#337EC5 is a mid, vivid cyan. Relative luminance 0.197; OKLCH L 58.1% C 0.132 H 250.2°. Best body text is #000000 at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#337EC5
RGB	rgb(51, 126, 197)
HSL	hsl(209, 59%, 49%)
HSV	hsv(209, 74%, 77%)
CMYK	cmyk(74.1%, 36%, 0%, 22.7%)
CIE-LAB	lab(51.44, 1.13, -43.58)
CIE-LCH	lch(51.44, 43.60, 271.49°)
OKLab	oklab(58.08% -0.0447 -0.124)
OKLCH	oklch(58.08% 0.132 250.2)
XYZ	xyz(18.9003, 19.6546, 55.6101)
Luminance	0.1966 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337EC5 #C57A33

analogous

#33C5C3 #337EC5 #3335C5

triadic

#337EC5 #C5337E #7EC533

tetradic

#337EC5 #C333C5 #C57A33 #35C533

square

#337EC5 #C333C5 #C57A33 #35C533

split-complementary

#337EC5 #C53335 #C5C333

monochromatic

#1A4064 #265F94 #337EC5 #5F9CD6 #90BAE2

Accessibility & contrast

On white

4.26

#337EC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.93

#337EC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337EC5

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337EC5	#FFFFFF	#000000	##000000
##337EC5	1.00	4.26	4.93	4.93
#FFFFFF	4.26	1.00	21.00	21.00
#000000	4.93	21.00	1.00	1.00
##000000	4.93	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D82C8

Deuteranopia (green-blind)

#4874C4

Tritanopia (blue-blind)

#008F98

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #337ec5;
/* rgb */ color: rgb(51, 126, 197);
/* oklch */ color: oklch(58.1% 0.132 250.2);

Tailwind

colors: {
  custom: {
    50: '#7ea3d7',
    500: '#337ec5',
    950: '#000000',
  },
}

SCSS

$custom: #337ec5;
$custom-light: #7ea3d7;
$custom-dark: #000000;

JSON

{
  "hex": "#337ec5",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 197
  },
  "hsl": {
    "h": 209.178,
    "s": 58.871,
    "l": 48.627
  },
  "oklch": {
    "l": 0.58081,
    "c": 0.13182,
    "h": 250.2
  },
  "luminance": 0.19657
}

Semantic roles & 50–950 ramp

primary

#337EC5

secondary

#CDA987

accent

#9246E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0F14

muted

#7C7E83

Preview Lab

Preview with #337EC5

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

Preview Lab → · Contrast checker → · Palette generator →