#337FEB#337FEB

#337FEB is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.7% C 0.179 H 258.0°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#337FEB
RGB	rgb(51, 127, 235)
HSL	hsl(215, 82%, 56%)
HSV	hsv(215, 78%, 92%)
CMYK	cmyk(78.3%, 46%, 0%, 7.8%)
CIE-LAB	lab(53.90, 14.50, -61.11)
CIE-LCH	lch(53.90, 62.81, 283.35°)
OKLab	oklab(60.69% -0.0374 -0.1755)
OKLCH	oklch(60.69% 0.179 258)
XYZ	xyz(23.9445, 21.8779, 81.5420)
Luminance	0.2188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#337FEB #EB9F33

analogous

#33DBEB #337FEB #4333EB

triadic

#337FEB #EB337F #7FEB33

tetradic

#337FEB #EB33DB #EB9F33 #33EB43

square

#337FEB #EB33DB #EB9F33 #33EB43

split-complementary

#337FEB #EB4333 #DBEB33

monochromatic

#0F4695 #1460CD #337FEB #6BA2F0 #A2C5F6

Accessibility & contrast

On white

3.91

#337FEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#337FEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #337FEB

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##337FEB	#FFFFFF	#000000	##000000
##337FEB	1.00	3.91	5.38	5.38
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#448AEF

Deuteranopia (green-blind)

#1179E9

Tritanopia (blue-blind)

#0099A9

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #337feb;
/* rgb */ color: rgb(51, 127, 235);
/* oklch */ color: oklch(60.7% 0.179 258.0);

Tailwind

colors: {
  custom: {
    50: '#85a3f2',
    500: '#337feb',
    950: '#000000',
  },
}

SCSS

$custom: #337feb;
$custom-light: #85a3f2;
$custom-dark: #000000;

JSON

{
  "hex": "#337feb",
  "rgb": {
    "r": 51,
    "g": 127,
    "b": 235
  },
  "hsl": {
    "h": 215.217,
    "s": 82.143,
    "l": 56.078
  },
  "oklch": {
    "l": 0.6069,
    "c": 0.17942,
    "h": 258
  },
  "luminance": 0.21881
}

Semantic roles & 50–950 ramp

primary

#337FEB

secondary

#E3C497

accent

#A52FF8

background

#F9F9FE

surface

#F1F2FD

border

#CBCCD5

text

#0D0F17

muted

#7E7E85

Preview Lab

Preview with #337FEB

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

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