#337FAF#337FAF

#337FAF is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 57.1% C 0.105 H 240.1°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#337FAF
RGB	rgb(51, 127, 175)
HSL	hsl(203, 55%, 44%)
HSV	hsv(203, 71%, 69%)
CMYK	cmyk(70.9%, 27.4%, 0%, 31.4%)
CIE-LAB	lab(50.66, -7.34, -32.18)
CIE-LCH	lch(50.66, 33.01, 257.16°)
OKLab	oklab(57.11% -0.0522 -0.0908)
OKLCH	oklch(57.11% 0.105 240.1)
XYZ	xyz(16.6895, 18.9759, 43.3323)
Luminance	0.1898 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FAF #AF6333

analogous

#33AFA1 #337FAF #3341AF

triadic

#337FAF #AF337F #7FAF33

tetradic

#337FAF #A133AF #AF6333 #41AF33

square

#337FAF #A133AF #AF6333 #41AF33

split-complementary

#337FAF #AF3341 #AFA133

monochromatic

#173A50 #255D80 #337FAF #529DCD #82B8DB

Accessibility & contrast

On white

4.38

#337FAF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#337FAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FAF

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FAF	#FFFFFF	#000000	##000000
##337FAF	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#697FB1

Deuteranopia (green-blind)

#5873AE

Tritanopia (blue-blind)

#008B90

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337faf;
/* rgb */ color: rgb(51, 127, 175);
/* oklch */ color: oklch(57.1% 0.105 240.1);

Tailwind

colors: {
  custom: {
    50: '#7aa4c7',
    500: '#337faf',
    950: '#000000',
  },
}

SCSS

$custom: #337faf;
$custom-light: #7aa4c7;
$custom-dark: #000000;

JSON

{
  "hex": "#337faf",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 175
  },
  "hsl": {
    "h": 203.226,
    "s": 54.867,
    "l": 44.314
  },
  "oklch": {
    "l": 0.57107,
    "c": 0.10474,
    "h": 240.1
  },
  "luminance": 0.18978
}

Semantic roles & 50–950 ramp

primary

#337FAF

secondary

#C4977A

accent

#834ADE

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #337FAF

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

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