#337FBC#337FBC

#337FBC is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.8% C 0.120 H 246.3°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#337FBC
RGB	rgb(51, 127, 188)
HSL	hsl(207, 57%, 47%)
HSV	hsv(207, 73%, 74%)
CMYK	cmyk(72.9%, 32.4%, 0%, 26.3%)
CIE-LAB	lab(51.28, -2.72, -38.69)
CIE-LCH	lch(51.28, 38.79, 265.98°)
OKLab	oklab(57.8% -0.0482 -0.1097)
OKLCH	oklch(57.8% 0.12 246.3)
XYZ	xyz(18.0282, 19.5114, 50.3831)
Luminance	0.1951 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FBC #BC7033

analogous

#33BCB5 #337FBC #333BBC

triadic

#337FBC #BC337F #7FBC33

tetradic

#337FBC #B533BC #BC7033 #3BBC33

square

#337FBC #B533BC #BC7033 #3BBC33

split-complementary

#337FBC #BC333B #BCB533

monochromatic

#193E5C #265E8C #337FBC #5A9DD2 #8AB9DF

Accessibility & contrast

On white

4.28

#337FBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.90

#337FBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FBC

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FBC	#FFFFFF	#000000	##000000
##337FBC	1.00	4.28	4.90	4.90
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.90	21.00	1.00	1.00
##000000	4.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6381BF

Deuteranopia (green-blind)

#5074BB

Tritanopia (blue-blind)

#008E95

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #337fbc;
/* rgb */ color: rgb(51, 127, 188);
/* oklch */ color: oklch(57.8% 0.120 246.3);

Tailwind

colors: {
  custom: {
    50: '#7ca3d0',
    500: '#337fbc',
    950: '#000000',
  },
}

SCSS

$custom: #337fbc;
$custom-light: #7ca3d0;
$custom-dark: #000000;

JSON

{
  "hex": "#337fbc",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 188
  },
  "hsl": {
    "h": 206.715,
    "s": 57.322,
    "l": 46.863
  },
  "oklch": {
    "l": 0.57802,
    "c": 0.11982,
    "h": 246.3
  },
  "luminance": 0.19513
}

Semantic roles & 50–950 ramp

primary

#337FBC

secondary

#C9A181

accent

#8C47E1

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0B0F14

muted

#7C7F82

Preview Lab

Preview with #337FBC

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

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