#337EC1#337EC1

#337EC1 is a mid, vivid cyan. Relative luminance 0.195; OKLCH L 57.9% C 0.127 H 248.8°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#337EC1
RGB	rgb(51, 126, 193)
HSL	hsl(208, 58%, 48%)
HSV	hsv(208, 74%, 76%)
CMYK	cmyk(73.6%, 34.7%, 0%, 24.3%)
CIE-LAB	lab(51.24, -0.32, -41.63)
CIE-LCH	lch(51.24, 41.63, 269.56°)
OKLab	oklab(57.85% -0.0458 -0.1183)
OKLCH	oklch(57.85% 0.127 248.8)
XYZ	xyz(18.4481, 19.4737, 53.2283)
Luminance	0.1948 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337EC1 #C17633

analogous

#33C1BD #337EC1 #3337C1

triadic

#337EC1 #C1337E #7EC133

tetradic

#337EC1 #BD33C1 #C17633 #37C133

square

#337EC1 #BD33C1 #C17633 #37C133

split-complementary

#337EC1 #C13337 #C1BD33

monochromatic

#193F60 #265E91 #337EC1 #5D9CD4 #8DBAE1

Accessibility & contrast

On white

4.29

#337EC1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#337EC1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337EC1

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337EC1	#FFFFFF	#000000	##000000
##337EC1	1.00	4.29	4.90	4.90
#FFFFFF	4.29	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F81C4

Deuteranopia (green-blind)

#4B74C0

Tritanopia (blue-blind)

#008E96

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #337ec1;
/* rgb */ color: rgb(51, 126, 193);
/* oklch */ color: oklch(57.9% 0.127 248.8);

Tailwind

colors: {
  custom: {
    50: '#7da3d4',
    500: '#337ec1',
    950: '#000000',
  },
}

SCSS

$custom: #337ec1;
$custom-light: #7da3d4;
$custom-dark: #000000;

JSON

{
  "hex": "#337ec1",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 193
  },
  "hsl": {
    "h": 208.31,
    "s": 58.197,
    "l": 47.843
  },
  "oklch": {
    "l": 0.5785,
    "c": 0.12684,
    "h": 248.8
  },
  "luminance": 0.19476
}

Semantic roles & 50–950 ramp

primary

#337EC1

secondary

#CBA684

accent

#9046E1

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0F14

muted

#7C7E83

Preview Lab

Preview with #337EC1

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

Preview Lab → · Contrast checker → · Palette generator →