#3658BD#3658BD

#3658BD is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.4% C 0.164 H 266.4°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#3658BD
RGB	rgb(54, 88, 189)
HSL	hsl(225, 56%, 48%)
HSV	hsv(225, 71%, 74%)
CMYK	cmyk(71.4%, 53.4%, 0%, 25.9%)
CIE-LAB	lab(40.31, 22.57, -56.80)
CIE-LCH	lch(40.31, 61.12, 291.67°)
OKLab	oklab(49.36% -0.0103 -0.1634)
OKLCH	oklch(49.36% 0.164 266.4)
XYZ	xyz(14.1931, 11.4364, 49.5937)
Luminance	0.1144 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3658BD #BD9B36

analogous

#369BBD #3658BD #5736BD

triadic

#3658BD #BD3658 #58BD36

tetradic

#3658BD #BD369B #BD9B36 #36BD57

square

#3658BD #BD369B #BD9B36 #36BD57

split-complementary

#3658BD #BD5736 #9BBD36

monochromatic

#1B2C5E #28428D #3658BD #5F7CD1 #8FA3DF

Accessibility & contrast

On white

6.39

#3658BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3658BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3658BD

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3658BD	#FFFFFF	#000000	##FFFFFF
##3658BD	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D65C1

Deuteranopia (green-blind)

#0059BB

Tritanopia (blue-blind)

#007082

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3658bd;
/* rgb */ color: rgb(54, 88, 189);
/* oklch */ color: oklch(49.4% 0.164 266.4);

Tailwind

colors: {
  custom: {
    50: '#7e86d2',
    500: '#3658bd',
    950: '#000000',
  },
}

SCSS

$custom: #3658bd;
$custom-light: #7e86d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3658bd",
  "rgb": {
    "r": 54,
    "g": 88,
    "b": 189
  },
  "hsl": {
    "h": 224.889,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.49361,
    "c": 0.16377,
    "h": 266.4
  },
  "luminance": 0.11438
}

Semantic roles & 50–950 ramp

primary

#3658BD

secondary

#C9B885

accent

#B949DF

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3658BD

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

Preview Lab → · Contrast checker → · Palette generator →