#337AC5#337AC5

#337AC5 is a mid, vivid cyan. Relative luminance 0.187; OKLCH L 57.2% C 0.136 H 252.4°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#337AC5
RGB	rgb(51, 122, 197)
HSL	hsl(211, 59%, 49%)
HSV	hsv(211, 74%, 77%)
CMYK	cmyk(74.1%, 38.1%, 0%, 22.7%)
CIE-LAB	lab(50.28, 3.56, -45.44)
CIE-LCH	lch(50.28, 45.58, 274.48°)
OKLab	oklab(57.17% -0.041 -0.1295)
OKLCH	oklch(57.17% 0.136 252.4)
XYZ	xyz(18.3991, 18.6520, 55.4430)
Luminance	0.1865 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AC5 #C57E33

analogous

#33C3C5 #337AC5 #3533C5

triadic

#337AC5 #C5337A #7AC533

tetradic

#337AC5 #C533C3 #C57E33 #33C535

square

#337AC5 #C533C3 #C57E33 #33C535

split-complementary

#337AC5 #C53533 #C3C533

monochromatic

#1A3E64 #265C94 #337AC5 #5F99D6 #90B8E2

Accessibility & contrast

On white

4.44

#337AC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#337AC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337AC5

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AC5	#FFFFFF	#000000	##000000
##337AC5	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#577FC8

Deuteranopia (green-blind)

#4171C4

Tritanopia (blue-blind)

#008C96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #337ac5;
/* rgb */ color: rgb(51, 122, 197);
/* oklch */ color: oklch(57.2% 0.136 252.4);

Tailwind

colors: {
  custom: {
    50: '#7ea0d7',
    500: '#337ac5',
    950: '#000000',
  },
}

SCSS

$custom: #337ac5;
$custom-light: #7ea0d7;
$custom-dark: #000000;

JSON

{
  "hex": "#337ac5",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 197
  },
  "hsl": {
    "h": 210.822,
    "s": 58.871,
    "l": 48.627
  },
  "oklch": {
    "l": 0.57167,
    "c": 0.13584,
    "h": 252.4
  },
  "luminance": 0.18654
}

Semantic roles & 50–950 ramp

primary

#337AC5

secondary

#CDAB87

accent

#9646E2

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #337AC5

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

Preview Lab → · Contrast checker → · Palette generator →