#337BA6#337BA6

#337BA6 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.7% C 0.098 H 238.4°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#337BA6
RGB	rgb(51, 123, 166)
HSL	hsl(202, 53%, 43%)
HSV	hsv(202, 69%, 65%)
CMYK	cmyk(69.3%, 25.9%, 0%, 34.9%)
CIE-LAB	lab(49.03, -8.16, -29.50)
CIE-LCH	lch(49.03, 30.61, 254.54°)
OKLab	oklab(55.68% -0.0512 -0.083)
OKLCH	oklch(55.68% 0.098 238.4)
XYZ	xyz(15.3285, 17.6212, 38.6624)
Luminance	0.1762 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BA6 #A65E33

analogous

#33A698 #337BA6 #3341A6

triadic

#337BA6 #A6337B #7BA633

tetradic

#337BA6 #9833A6 #A65E33 #41A633

square

#337BA6 #9833A6 #A65E33 #41A633

split-complementary

#337BA6 #A63341 #A69833

monochromatic

#163648 #255877 #337BA6 #4E9BC9 #7CB5D7

Accessibility & contrast

On white

4.64

#337BA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#337BA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337BA6

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BA6	#FFFFFF	#000000	##FFFFFF
##337BA6	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)

#677BA8

Deuteranopia (green-blind)

#5770A5

Tritanopia (blue-blind)

#00868A

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #337ba6;
/* rgb */ color: rgb(51, 123, 166);
/* oklch */ color: oklch(55.7% 0.098 238.4);

Tailwind

colors: {
  custom: {
    50: '#78a1c0',
    500: '#337ba6',
    950: '#000000',
  },
}

SCSS

$custom: #337ba6;
$custom-light: #78a1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#337ba6",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 166
  },
  "hsl": {
    "h": 202.435,
    "s": 52.995,
    "l": 42.549
  },
  "oklch": {
    "l": 0.55682,
    "c": 0.09754,
    "h": 238.4
  },
  "luminance": 0.17623
}

Semantic roles & 50–950 ramp

primary

#337BA6

secondary

#C09175

accent

#824BDC

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #337BA6

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

Preview Lab → · Contrast checker → · Palette generator →