#337CA0#337CA0

#337CA0 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.6% C 0.091 H 233.2°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#337CA0
RGB	rgb(51, 124, 160)
HSL	hsl(200, 52%, 41%)
HSV	hsv(200, 68%, 63%)
CMYK	cmyk(68.1%, 22.5%, 0%, 37.3%)
CIE-LAB	lab(49.08, -10.80, -25.93)
CIE-LCH	lch(49.08, 28.09, 247.38°)
OKLab	oklab(55.63% -0.0544 -0.0728)
OKLCH	oklch(55.63% 0.091 233.2)
XYZ	xyz(14.9156, 17.6556, 35.8727)
Luminance	0.1766 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337CA0 #A05733

analogous

#33A08E #337CA0 #3345A0

triadic

#337CA0 #A0337C #7CA033

tetradic

#337CA0 #8E33A0 #A05733 #45A033

square

#337CA0 #8E33A0 #A05733 #45A033

split-complementary

#337CA0 #A03345 #A08E33

monochromatic

#153443 #245872 #337CA0 #4B9DC6 #79B6D4

Accessibility & contrast

On white

4.63

#337CA0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#337CA0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337CA0

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337CA0	#FFFFFF	#000000	##FFFFFF
##337CA0	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7BA2

Deuteranopia (green-blind)

#5B709F

Tritanopia (blue-blind)

#008688

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337ca0;
/* rgb */ color: rgb(51, 124, 160);
/* oklch */ color: oklch(55.6% 0.091 233.2);

Tailwind

colors: {
  custom: {
    50: '#77a1bc',
    500: '#337ca0',
    950: '#000000',
  },
}

SCSS

$custom: #337ca0;
$custom-light: #77a1bc;
$custom-dark: #000000;

JSON

{
  "hex": "#337ca0",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 160
  },
  "hsl": {
    "h": 199.817,
    "s": 51.659,
    "l": 41.373
  },
  "oklch": {
    "l": 0.55629,
    "c": 0.09082,
    "h": 233.2
  },
  "luminance": 0.17657
}

Semantic roles & 50–950 ramp

primary

#337CA0

secondary

#BD8B72

accent

#7C4DDB

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #337CA0

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

Preview Lab → · Contrast checker → · Palette generator →