#337AB8#337AB8

#337AB8 is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.4% C 0.119 H 248.1°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#337AB8
RGB	rgb(51, 122, 184)
HSL	hsl(208, 57%, 46%)
HSV	hsv(208, 72%, 72%)
CMYK	cmyk(72.3%, 33.7%, 0%, 27.8%)
CIE-LAB	lab(49.60, -1.17, -39.05)
CIE-LCH	lch(49.60, 39.07, 268.28°)
OKLab	oklab(56.41% -0.0445 -0.1108)
OKLCH	oklch(56.41% 0.119 248.1)
XYZ	xyz(16.9732, 18.0817, 47.9337)
Luminance	0.1808 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AB8 #B87133

analogous

#33B8B3 #337AB8 #3337B8

triadic

#337AB8 #B8337A #7AB833

tetradic

#337AB8 #B333B8 #B87133 #37B833

square

#337AB8 #B333B8 #B87133 #37B833

split-complementary

#337AB8 #B83337 #B8B333

monochromatic

#183A58 #265A88 #337AB8 #5898D1 #88B6DE

Accessibility & contrast

On white

4.55

#337AB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#337AB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337AB8

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AB8	#FFFFFF	#000000	##000000
##337AB8	1.00	4.55	4.62	4.62
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7DBB

Deuteranopia (green-blind)

#4B70B7

Tritanopia (blue-blind)

#008990

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #337ab8;
/* rgb */ color: rgb(51, 122, 184);
/* oklch */ color: oklch(56.4% 0.119 248.1);

Tailwind

colors: {
  custom: {
    50: '#7ba0cd',
    500: '#337ab8',
    950: '#000000',
  },
}

SCSS

$custom: #337ab8;
$custom-light: #7ba0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#337ab8",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 184
  },
  "hsl": {
    "h": 207.97,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.56409,
    "c": 0.1194,
    "h": 248.1
  },
  "luminance": 0.18084
}

Semantic roles & 50–950 ramp

primary

#337AB8

secondary

#C8A17F

accent

#8F48E0

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #337AB8

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

Preview Lab → · Contrast checker → · Palette generator →