#337BCA#337BCA

#337BCA is a mid, vivid cyan. Relative luminance 0.191; OKLCH L 57.7% C 0.141 H 253.2°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#337BCA
RGB	rgb(51, 123, 202)
HSL	hsl(211, 60%, 50%)
HSV	hsv(211, 75%, 79%)
CMYK	cmyk(74.8%, 39.1%, 0%, 20.8%)
CIE-LAB	lab(50.84, 4.78, -47.40)
CIE-LCH	lch(50.84, 47.64, 275.76°)
OKLab	oklab(57.7% -0.0407 -0.1352)
OKLCH	oklch(57.7% 0.141 253.2)
XYZ	xyz(19.1049, 19.1318, 58.5516)
Luminance	0.1913 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337BCA #CA8233

analogous

#33C7CA #337BCA #3733CA

triadic

#337BCA #CA337B #7BCA33

tetradic

#337BCA #CA33C7 #CA8233 #33CA37

square

#337BCA #CA33C7 #CA8233 #33CA37

split-complementary

#337BCA #CA3733 #C7CA33

monochromatic

#1A3F68 #275D99 #337BCA #639AD8 #94BAE4

Accessibility & contrast

On white

4.35

#337BCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#337BCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337BCA

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337BCA	#FFFFFF	#000000	##000000
##337BCA	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5681CD

Deuteranopia (green-blind)

#3E73C8

Tritanopia (blue-blind)

#008E99

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #337bca;
/* rgb */ color: rgb(51, 123, 202);
/* oklch */ color: oklch(57.7% 0.141 253.2);

Tailwind

colors: {
  custom: {
    50: '#7fa0da',
    500: '#337bca',
    950: '#000000',
  },
}

SCSS

$custom: #337bca;
$custom-light: #7fa0da;
$custom-dark: #000000;

JSON

{
  "hex": "#337bca",
  "rgb": {
    "r": 51,
    "g": 123,
    "b": 202
  },
  "hsl": {
    "h": 211.391,
    "s": 59.684,
    "l": 49.608
  },
  "oklch": {
    "l": 0.57696,
    "c": 0.14123,
    "h": 253.2
  },
  "luminance": 0.19134
}

Semantic roles & 50–950 ramp

primary

#337BCA

secondary

#CFAE8A

accent

#9845E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0E15

muted

#7C7E83

Preview Lab

Preview with #337BCA

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

Preview Lab → · Contrast checker → · Palette generator →