#337C9F#337C9F

#337C9F is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.6% C 0.090 H 232.5°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#337C9F
RGB	rgb(51, 124, 159)
HSL	hsl(199, 51%, 41%)
HSV	hsv(199, 68%, 62%)
CMYK	cmyk(67.9%, 22%, 0%, 37.6%)
CIE-LAB	lab(49.03, -11.15, -25.42)
CIE-LCH	lch(49.03, 27.75, 246.32°)
OKLab	oklab(55.58% -0.0547 -0.0713)
OKLCH	oklch(55.58% 0.09 232.5)
XYZ	xyz(14.8284, 17.6207, 35.4138)
Luminance	0.1762 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337C9F #9F5633

analogous

#339F8C #337C9F #33469F

triadic

#337C9F #9F337C #7C9F33

tetradic

#337C9F #8C339F #9F5633 #469F33

square

#337C9F #8C339F #9F5633 #469F33

split-complementary

#337C9F #9F3346 #9F8C33

monochromatic

#153442 #245871 #337C9F #4A9DC5 #79B6D4

Accessibility & contrast

On white

4.64

#337C9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#337C9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337C9F

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337C9F	#FFFFFF	#000000	##FFFFFF
##337C9F	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7BA1

Deuteranopia (green-blind)

#5C709E

Tritanopia (blue-blind)

#008588

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #337c9f;
/* rgb */ color: rgb(51, 124, 159);
/* oklch */ color: oklch(55.6% 0.090 232.5);

Tailwind

colors: {
  custom: {
    50: '#77a1bb',
    500: '#337c9f',
    950: '#000000',
  },
}

SCSS

$custom: #337c9f;
$custom-light: #77a1bb;
$custom-dark: #000000;

JSON

{
  "hex": "#337c9f",
  "rgb": {
    "r": 51,
    "g": 124,
    "b": 159
  },
  "hsl": {
    "h": 199.444,
    "s": 51.429,
    "l": 41.176
  },
  "oklch": {
    "l": 0.55581,
    "c": 0.08986,
    "h": 232.5
  },
  "luminance": 0.17622
}

Semantic roles & 50–950 ramp

primary

#337C9F

secondary

#BC8A71

accent

#7B4DDB

background

#F7F9FB

surface

#EEF2F6

border

#C9CCD0

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #337C9F

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

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