#3658BC#3658BC

#3658BC is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.3% C 0.162 H 266.3°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#3658BC
RGB	rgb(54, 88, 188)
HSL	hsl(225, 55%, 47%)
HSV	hsv(225, 71%, 74%)
CMYK	cmyk(71.3%, 53.2%, 0%, 26.3%)
CIE-LAB	lab(40.23, 22.20, -56.33)
CIE-LCH	lch(40.23, 60.55, 291.51°)
OKLab	oklab(49.29% -0.0104 -0.1621)
OKLCH	oklch(49.29% 0.162 266.3)
XYZ	xyz(14.0850, 11.3931, 49.0240)
Luminance	0.1139 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3658BC #BC9A36

analogous

#369BBC #3658BC #5736BC

triadic

#3658BC #BC3658 #58BC36

tetradic

#3658BC #BC369B #BC9A36 #36BC57

square

#3658BC #BC369B #BC9A36 #36BC57

split-complementary

#3658BC #BC5736 #9BBC36

monochromatic

#1B2B5D #28428C #3658BC #5E7BD1 #8EA2DF

Accessibility & contrast

On white

6.40

#3658BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3658BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3658BC

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3658BC	#FFFFFF	#000000	##FFFFFF
##3658BC	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1065C0

Deuteranopia (green-blind)

#0059BA

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3658bc;
/* rgb */ color: rgb(54, 88, 188);
/* oklch */ color: oklch(49.3% 0.162 266.3);

Tailwind

colors: {
  custom: {
    50: '#7e86d1',
    500: '#3658bc',
    950: '#000000',
  },
}

SCSS

$custom: #3658bc;
$custom-light: #7e86d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3658bc",
  "rgb": {
    "r": 54,
    "g": 88,
    "b": 188
  },
  "hsl": {
    "h": 224.776,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.49285,
    "c": 0.1624,
    "h": 266.3
  },
  "luminance": 0.11395
}

Semantic roles & 50–950 ramp

primary

#3658BC

secondary

#C9B885

accent

#B949DF

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3658BC

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

Preview Lab → · Contrast checker → · Palette generator →