#3357B8#3357B8

#3357B8 is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.6% C 0.159 H 265.5°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#3357B8
RGB	rgb(51, 87, 184)
HSL	hsl(224, 57%, 46%)
HSV	hsv(224, 72%, 72%)
CMYK	cmyk(72.3%, 52.7%, 0%, 27.8%)
CIE-LAB	lab(39.55, 20.95, -55.11)
CIE-LCH	lch(39.55, 58.96, 290.81°)
OKLab	oklab(48.64% -0.0125 -0.1585)
OKLCH	oklch(48.64% 0.159 265.5)
XYZ	xyz(13.4221, 10.9795, 46.7500)
Luminance	0.1098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3357B8 #B89433

analogous

#3399B8 #3357B8 #5133B8

triadic

#3357B8 #B83357 #57B833

tetradic

#3357B8 #B83399 #B89433 #33B851

square

#3357B8 #B83399 #B89433 #33B851

split-complementary

#3357B8 #B85133 #99B833

monochromatic

#182A58 #264088 #3357B8 #5878D1 #889FDE

Accessibility & contrast

On white

6.57

#3357B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#3357B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3357B8

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3357B8	#FFFFFF	#000000	##FFFFFF
##3357B8	1.00	6.57	3.20	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1464BB

Deuteranopia (green-blind)

#0057B6

Tritanopia (blue-blind)

#006E7F

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3357b8;
/* rgb */ color: rgb(51, 87, 184);
/* oklch */ color: oklch(48.6% 0.159 265.5);

Tailwind

colors: {
  custom: {
    50: '#7c85ce',
    500: '#3357b8',
    950: '#000000',
  },
}

SCSS

$custom: #3357b8;
$custom-light: #7c85ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3357b8",
  "rgb": {
    "r": 51,
    "g": 87,
    "b": 184
  },
  "hsl": {
    "h": 223.759,
    "s": 56.596,
    "l": 46.078
  },
  "oklch": {
    "l": 0.48637,
    "c": 0.15905,
    "h": 265.5
  },
  "luminance": 0.10981
}

Semantic roles & 50–950 ramp

primary

#3357B8

secondary

#C8B47F

accent

#B748E0

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3357B8

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

Preview Lab → · Contrast checker → · Palette generator →