#337FBA#337FBA

#337FBA is a mid, moderate cyan. Relative luminance 0.194; OKLCH L 57.7% C 0.117 H 245.5°. Best body text is #000000 at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#337FBA
RGB	rgb(51, 127, 186)
HSL	hsl(206, 57%, 46%)
HSV	hsv(206, 73%, 73%)
CMYK	cmyk(72.6%, 31.7%, 0%, 27.1%)
CIE-LAB	lab(51.18, -3.44, -37.70)
CIE-LCH	lch(51.18, 37.86, 264.79°)
OKLab	oklab(57.69% -0.0488 -0.1068)
OKLCH	oklch(57.69% 0.117 245.5)
XYZ	xyz(17.8141, 19.4257, 49.2555)
Luminance	0.1943 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FBA #BA6E33

analogous

#33BAB2 #337FBA #333CBA

triadic

#337FBA #BA337F #7FBA33

tetradic

#337FBA #B233BA #BA6E33 #3CBA33

square

#337FBA #B233BA #BA6E33 #3CBA33

split-complementary

#337FBA #BA333C #BAB233

monochromatic

#193D5A #265E8A #337FBA #599DD1 #89B9DF

Accessibility & contrast

On white

4.30

#337FBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.89

#337FBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FBA

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FBA	#FFFFFF	#000000	##000000
##337FBA	1.00	4.30	4.89	4.89
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.89	21.00	1.00	1.00
##000000	4.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6481BD

Deuteranopia (green-blind)

#5174B9

Tritanopia (blue-blind)

#008D94

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #337fba;
/* rgb */ color: rgb(51, 127, 186);
/* oklch */ color: oklch(57.7% 0.117 245.5);

Tailwind

colors: {
  custom: {
    50: '#7ca3cf',
    500: '#337fba',
    950: '#000000',
  },
}

SCSS

$custom: #337fba;
$custom-light: #7ca3cf;
$custom-dark: #000000;

JSON

{
  "hex": "#337fba",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 186
  },
  "hsl": {
    "h": 206.222,
    "s": 56.962,
    "l": 46.471
  },
  "oklch": {
    "l": 0.57691,
    "c": 0.11741,
    "h": 245.5
  },
  "luminance": 0.19428
}

Semantic roles & 50–950 ramp

primary

#337FBA

secondary

#C9A080

accent

#8A48E0

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #337FBA

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

Preview Lab → · Contrast checker → · Palette generator →