#3357B5#3357B5

#3357B5 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.4% C 0.155 H 265.2°. Best body text is #FFFFFF at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#3357B5
RGB	rgb(51, 87, 181)
HSL	hsl(223, 56%, 45%)
HSV	hsv(223, 72%, 71%)
CMYK	cmyk(71.8%, 51.9%, 0%, 29%)
CIE-LAB	lab(39.34, 19.83, -53.69)
CIE-LCH	lch(39.34, 57.24, 290.27°)
OKLab	oklab(48.41% -0.0128 -0.1544)
OKLCH	oklch(48.41% 0.155 265.2)
XYZ	xyz(13.1110, 10.8550, 45.1114)
Luminance	0.1086 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3357B5 #B59133

analogous

#3398B5 #3357B5 #5033B5

triadic

#3357B5 #B53357 #57B533

tetradic

#3357B5 #B53398 #B59133 #33B550

square

#3357B5 #B53398 #B59133 #33B550

split-complementary

#3357B5 #B55033 #98B533

monochromatic

#182956 #264085 #3357B5 #5677CF #869EDD

Accessibility & contrast

On white

6.62

#3357B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.17

#3357B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3357B5

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3357B5	#FFFFFF	#000000	##FFFFFF
##3357B5	1.00	6.62	3.17	6.62
#FFFFFF	6.62	1.00	21.00	1.00
#000000	3.17	21.00	1.00	21.00
##FFFFFF	6.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B63B8

Deuteranopia (green-blind)

#0057B3

Tritanopia (blue-blind)

#006D7D

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #3357b5;
/* rgb */ color: rgb(51, 87, 181);
/* oklch */ color: oklch(48.4% 0.155 265.2);

Tailwind

colors: {
  custom: {
    50: '#7b85cc',
    500: '#3357b5',
    950: '#000000',
  },
}

SCSS

$custom: #3357b5;
$custom-light: #7b85cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3357b5",
  "rgb": {
    "r": 51,
    "g": 87,
    "b": 181
  },
  "hsl": {
    "h": 223.385,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.4841,
    "c": 0.1549,
    "h": 265.2
  },
  "luminance": 0.10856
}

Semantic roles & 50–950 ramp

primary

#3357B5

secondary

#C6B27D

accent

#B648DF

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3357B5

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

Preview Lab → · Contrast checker → · Palette generator →