#3365B1#3365B1

#3365B1 is a mid, vivid blue. Relative luminance 0.132; OKLCH L 51.2% C 0.132 H 258.6°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#3365B1
RGB	rgb(51, 101, 177)
HSL	hsl(216, 55%, 45%)
HSV	hsv(216, 71%, 69%)
CMYK	cmyk(71.2%, 42.9%, 0%, 30.6%)
CIE-LAB	lab(43.04, 9.28, -45.39)
CIE-LCH	lch(43.04, 46.33, 281.55°)
OKLab	oklab(51.17% -0.0261 -0.1297)
OKLCH	oklch(51.17% 0.132 258.6)
XYZ	xyz(13.9519, 13.1840, 43.3959)
Luminance	0.1318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3365B1 #B17F33

analogous

#33A4B1 #3365B1 #4033B1

triadic

#3365B1 #B13365 #65B133

tetradic

#3365B1 #B133A4 #B17F33 #33B140

square

#3365B1 #B133A4 #B17F33 #33B140

split-complementary

#3365B1 #B14033 #A4B133

monochromatic

#182F52 #254A81 #3365B1 #5484CE #83A6DB

Accessibility & contrast

On white

5.77

#3365B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#3365B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3365B1

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3365B1	#FFFFFF	#000000	##FFFFFF
##3365B1	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#406CB4

Deuteranopia (green-blind)

#2B60AF

Tritanopia (blue-blind)

#007782

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3365b1;
/* rgb */ color: rgb(51, 101, 177);
/* oklch */ color: oklch(51.2% 0.132 258.6);

Tailwind

colors: {
  custom: {
    50: '#7a90c9',
    500: '#3365b1',
    950: '#000000',
  },
}

SCSS

$custom: #3365b1;
$custom-light: #7a90c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3365b1",
  "rgb": {
    "r": 51,
    "g": 101,
    "b": 177
  },
  "hsl": {
    "h": 216.19,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51167,
    "c": 0.1323,
    "h": 258.6
  },
  "luminance": 0.13185
}

Semantic roles & 50–950 ramp

primary

#3365B1

secondary

#C5A77B

accent

#A349DF

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3365B1

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

Preview Lab → · Contrast checker → · Palette generator →