#337FDC#337FDC

#337FDC is a mid, vivid cyan. Relative luminance 0.210; OKLCH L 59.7% C 0.160 H 255.5°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#337FDC
RGB	rgb(51, 127, 220)
HSL	hsl(213, 71%, 53%)
HSV	hsv(213, 77%, 86%)
CMYK	cmyk(76.8%, 42.3%, 0%, 13.7%)
CIE-LAB	lab(53.00, 8.96, -54.14)
CIE-LCH	lch(53.00, 54.88, 279.40°)
OKLab	oklab(59.71% -0.0402 -0.155)
OKLCH	oklch(59.71% 0.16 255.5)
XYZ	xyz(21.8681, 21.0473, 70.6063)
Luminance	0.2105 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FDC #DC9033

analogous

#33D3DC #337FDC #3B33DC

triadic

#337FDC #DC337F #7FDC33

tetradic

#337FDC #DC33D3 #DC9033 #33DC3B

square

#337FDC #DC33D3 #DC9033 #33DC3B

split-complementary

#337FDC #DC3B33 #D3DC33

monochromatic

#16457F #1F61B3 #337FDC #67A0E5 #9BC1EE

Accessibility & contrast

On white

4.03

#337FDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#337FDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FDC

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FDC	#FFFFFF	#000000	##000000
##337FDC	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5187E0

Deuteranopia (green-blind)

#3277DA

Tritanopia (blue-blind)

#0095A3

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #337fdc;
/* rgb */ color: rgb(51, 127, 220);
/* oklch */ color: oklch(59.7% 0.160 255.5);

Tailwind

colors: {
  custom: {
    50: '#82a3e7',
    500: '#337fdc',
    950: '#000000',
  },
}

SCSS

$custom: #337fdc;
$custom-light: #82a3e7;
$custom-dark: #000000;

JSON

{
  "hex": "#337fdc",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 220
  },
  "hsl": {
    "h": 213.018,
    "s": 70.711,
    "l": 53.137
  },
  "oklch": {
    "l": 0.59708,
    "c": 0.16011,
    "h": 255.5
  },
  "luminance": 0.2105
}

Semantic roles & 50–950 ramp

primary

#337FDC

secondary

#DAB991

accent

#9D3AED

background

#F8FAFE

surface

#F0F3FC

border

#CBCDD5

text

#0C0F16

muted

#7D7F84

Preview Lab

Preview with #337FDC

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

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