#337EA7#337EA7

#337EA7 is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.5% C 0.097 H 236.1°. Best body text is #000000 at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#337EA7
RGB	rgb(51, 126, 167)
HSL	hsl(201, 53%, 43%)
HSV	hsv(201, 69%, 65%)
CMYK	cmyk(69.5%, 24.6%, 0%, 34.5%)
CIE-LAB	lab(49.99, -9.54, -28.58)
CIE-LCH	lch(49.99, 30.14, 251.53°)
OKLab	oklab(56.46% -0.0539 -0.0804)
OKLCH	oklch(56.46% 0.097 236.1)
XYZ	xyz(15.7984, 18.4138, 39.2733)
Luminance	0.1842 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337EA7 #A75C33

analogous

#33A796 #337EA7 #3344A7

triadic

#337EA7 #A7337E #7EA733

tetradic

#337EA7 #9633A7 #A75C33 #44A733

square

#337EA7 #9633A7 #A75C33 #44A733

split-complementary

#337EA7 #A73344 #A79633

monochromatic

#163749 #255B78 #337EA7 #4E9EC9 #7DB7D7

Accessibility & contrast

On white

4.48

#337EA7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.68

#337EA7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337EA7

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337EA7	#FFFFFF	#000000	##000000
##337EA7	1.00	4.48	4.68	4.68
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.68	21.00	1.00	1.00
##000000	4.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7DA9

Deuteranopia (green-blind)

#5B72A6

Tritanopia (blue-blind)

#00898C

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #337ea7;
/* rgb */ color: rgb(51, 126, 167);
/* oklch */ color: oklch(56.5% 0.097 236.1);

Tailwind

colors: {
  custom: {
    50: '#79a3c1',
    500: '#337ea7',
    950: '#000000',
  },
}

SCSS

$custom: #337ea7;
$custom-light: #79a3c1;
$custom-dark: #000000;

JSON

{
  "hex": "#337ea7",
  "rgb": {
    "r": 51,
    "g": 126,
    "b": 167
  },
  "hsl": {
    "h": 201.207,
    "s": 53.211,
    "l": 42.745
  },
  "oklch": {
    "l": 0.5646,
    "c": 0.09681,
    "h": 236.1
  },
  "luminance": 0.18416
}

Semantic roles & 50–950 ramp

primary

#337EA7

secondary

#C09076

accent

#7F4BDD

background

#F7FAFB

surface

#EEF3F7

border

#C9CDD0

text

#0A0F12

muted

#7C7F81

Preview Lab

Preview with #337EA7

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

Preview Lab → · Contrast checker → · Palette generator →