#337AB0#337AB0

#337AB0 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 56.0% C 0.110 H 244.7°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#337AB0
RGB	rgb(51, 122, 176)
HSL	hsl(206, 55%, 45%)
HSV	hsv(206, 71%, 69%)
CMYK	cmyk(71%, 30.7%, 0%, 31%)
CIE-LAB	lab(49.20, -4.04, -35.05)
CIE-LCH	lch(49.20, 35.28, 263.42°)
OKLab	oklab(55.97% -0.0469 -0.0991)
OKLCH	oklch(55.97% 0.11 244.7)
XYZ	xyz(16.1583, 17.7557, 43.6415)
Luminance	0.1776 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337AB0 #B06933

analogous

#33B0A8 #337AB0 #333CB0

triadic

#337AB0 #B0337A #7AB033

tetradic

#337AB0 #A833B0 #B06933 #3CB033

square

#337AB0 #A833B0 #B06933 #3CB033

split-complementary

#337AB0 #B0333C #B0A833

monochromatic

#183851 #255981 #337AB0 #5398CD #82B5DB

Accessibility & contrast

On white

4.61

#337AB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#337AB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #337AB0

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337AB0	#FFFFFF	#000000	##FFFFFF
##337AB0	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#627CB2

Deuteranopia (green-blind)

#5070AF

Tritanopia (blue-blind)

#00878D

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #337ab0;
/* rgb */ color: rgb(51, 122, 176);
/* oklch */ color: oklch(56.0% 0.110 244.7);

Tailwind

colors: {
  custom: {
    50: '#7aa0c8',
    500: '#337ab0',
    950: '#000000',
  },
}

SCSS

$custom: #337ab0;
$custom-light: #7aa0c8;
$custom-dark: #000000;

JSON

{
  "hex": "#337ab0",
  "rgb": {
    "r": 51,
    "g": 122,
    "b": 176
  },
  "hsl": {
    "h": 205.92,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.55967,
    "c": 0.10967,
    "h": 244.7
  },
  "luminance": 0.17757
}

Semantic roles & 50–950 ramp

primary

#337AB0

secondary

#C49A7B

accent

#8A49DE

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #337AB0

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

Preview Lab → · Contrast checker → · Palette generator →