#337BA7#337BA7

#337BA7 is a mid, moderate cyan. Relative luminance 0.177; OKLCH L 55.7% C 0.099 H 239.0°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#337BA7
RGB	rgb(51, 123, 167)
HSL	hsl(203, 53%, 43%)
HSV	hsv(203, 69%, 65%)
CMYK	cmyk(69.5%, 26.3%, 0%, 34.5%)
CIE-LAB	lab(49.08, -7.81, -30.01)
CIE-LCH	lch(49.08, 31.01, 255.41°)
OKLab	oklab(55.73% -0.0508 -0.0845)
OKLCH	oklch(55.73% 0.099 239)
XYZ	xyz(15.4205, 17.6581, 39.1474)
Luminance	0.1766 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BA7 #A75F33

analogous

#33A799 #337BA7 #3341A7

triadic

#337BA7 #A7337B #7BA733

tetradic

#337BA7 #9933A7 #A75F33 #41A733

square

#337BA7 #9933A7 #A75F33 #41A733

split-complementary

#337BA7 #A73341 #A79933

monochromatic

#163649 #255878 #337BA7 #4E9AC9 #7DB5D7

Accessibility & contrast

On white

4.63

#337BA7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#337BA7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337BA7

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BA7	#FFFFFF	#000000	##FFFFFF
##337BA7	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#677BA9

Deuteranopia (green-blind)

#5770A6

Tritanopia (blue-blind)

#00868A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337ba7;
/* rgb */ color: rgb(51, 123, 167);
/* oklch */ color: oklch(55.7% 0.099 239.0);

Tailwind

colors: {
  custom: {
    50: '#79a1c1',
    500: '#337ba7',
    950: '#000000',
  },
}

SCSS

$custom: #337ba7;
$custom-light: #79a1c1;
$custom-dark: #000000;

JSON

{
  "hex": "#337ba7",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 167
  },
  "hsl": {
    "h": 202.759,
    "s": 53.211,
    "l": 42.745
  },
  "oklch": {
    "l": 0.55733,
    "c": 0.09862,
    "h": 239
  },
  "luminance": 0.1766
}

Semantic roles & 50–950 ramp

primary

#337BA7

secondary

#C09276

accent

#824BDD

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337BA7

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

Preview Lab → · Contrast checker → · Palette generator →