#337FAA#337FAA

#337FAA is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 56.9% C 0.099 H 237.1°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#337FAA
RGB	rgb(51, 127, 170)
HSL	hsl(202, 54%, 43%)
HSV	hsv(202, 70%, 67%)
CMYK	cmyk(70%, 25.3%, 0%, 33.3%)
CIE-LAB	lab(50.43, -9.08, -29.64)
CIE-LCH	lch(50.43, 31.00, 252.97°)
OKLab	oklab(56.85% -0.0539 -0.0834)
OKLCH	oklch(56.85% 0.099 237.1)
XYZ	xyz(16.2075, 18.7831, 40.7937)
Luminance	0.1878 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FAA #AA5E33

analogous

#33AA99 #337FAA #3343AA

triadic

#337FAA #AA337F #7FAA33

tetradic

#337FAA #9933AA #AA5E33 #43AA33

square

#337FAA #9933AA #AA5E33 #43AA33

split-complementary

#337FAA #AA3343 #AA9933

monochromatic

#17394C #255C7B #337FAA #509ECA #7FB8D9

Accessibility & contrast

On white

4.41

#337FAA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#337FAA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FAA

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FAA	#FFFFFF	#000000	##000000
##337FAA	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7FAC

Deuteranopia (green-blind)

#5A73A9

Tritanopia (blue-blind)

#008A8E

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337faa;
/* rgb */ color: rgb(51, 127, 170);
/* oklch */ color: oklch(56.9% 0.099 237.1);

Tailwind

colors: {
  custom: {
    50: '#79a4c3',
    500: '#337faa',
    950: '#000000',
  },
}

SCSS

$custom: #337faa;
$custom-light: #79a4c3;
$custom-dark: #000000;

JSON

{
  "hex": "#337faa",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 170
  },
  "hsl": {
    "h": 201.681,
    "s": 53.846,
    "l": 43.333
  },
  "oklch": {
    "l": 0.56852,
    "c": 0.09935,
    "h": 237.1
  },
  "luminance": 0.18785
}

Semantic roles & 50–950 ramp

primary

#337FAA

secondary

#C29277

accent

#804BDD

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #337FAA

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

Preview Lab → · Contrast checker → · Palette generator →