#337E9F#337E9F

#337E9F is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.1% C 0.089 H 230.3°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#337E9F
RGB	rgb(51, 126, 159)
HSL	hsl(198, 51%, 41%)
HSV	hsv(198, 68%, 62%)
CMYK	cmyk(67.9%, 20.8%, 0%, 37.6%)
CIE-LAB	lab(49.65, -12.28, -24.46)
CIE-LCH	lch(49.65, 27.37, 243.34°)
OKLab	oklab(56.07% -0.0569 -0.0685)
OKLCH	oklch(56.07% 0.089 230.3)
XYZ	xyz(15.0816, 18.1271, 35.4982)
Luminance	0.1813 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337E9F #9F5433

analogous

#339F8A #337E9F #33489F

triadic

#337E9F #9F337E #7E9F33

tetradic

#337E9F #8A339F #9F5433 #489F33

square

#337E9F #8A339F #9F5433 #489F33

split-complementary

#337E9F #9F3348 #9F8A33

monochromatic

#153542 #245971 #337E9F #4A9FC5 #79B8D4

Accessibility & contrast

On white

4.54

#337E9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#337E9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337E9F

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337E9F	#FFFFFF	#000000	##000000
##337E9F	1.00	4.54	4.63	4.63
#FFFFFF	4.54	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7CA1

Deuteranopia (green-blind)

#5E719F

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337e9f;
/* rgb */ color: rgb(51, 126, 159);
/* oklch */ color: oklch(56.1% 0.089 230.3);

Tailwind

colors: {
  custom: {
    50: '#77a3bb',
    500: '#337e9f',
    950: '#000000',
  },
}

SCSS

$custom: #337e9f;
$custom-light: #77a3bb;
$custom-dark: #000000;

JSON

{
  "hex": "#337e9f",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 159
  },
  "hsl": {
    "h": 198.333,
    "s": 51.429,
    "l": 41.176
  },
  "oklch": {
    "l": 0.56072,
    "c": 0.08905,
    "h": 230.3
  },
  "luminance": 0.18129
}

Semantic roles & 50–950 ramp

primary

#337E9F

secondary

#BC8871

accent

#784DDB

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #337E9F

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

Preview Lab → · Contrast checker → · Palette generator →