#3658BF#3658BF

#3658BF is a mid, vivid blue. Relative luminance 0.115; OKLCH L 49.5% C 0.167 H 266.5°. Best body text is #FFFFFF at 6.35:1 contrast (WCAG AA passes).

Color values

HEX	#3658BF
RGB	rgb(54, 88, 191)
HSL	hsl(225, 56%, 48%)
HSV	hsv(225, 72%, 75%)
CMYK	cmyk(71.7%, 53.9%, 0%, 25.1%)
CIE-LAB	lab(40.45, 23.31, -57.74)
CIE-LCH	lch(40.45, 62.26, 291.98°)
OKLab	oklab(49.52% -0.0102 -0.1662)
OKLCH	oklch(49.52% 0.167 266.5)
XYZ	xyz(14.4117, 11.5238, 50.7449)
Luminance	0.1153 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3658BF #BF9D36

analogous

#369DBF #3658BF #5836BF

triadic

#3658BF #BF3658 #58BF36

tetradic

#3658BF #BF369D #BF9D36 #36BF58

square

#3658BF #BF369D #BF9D36 #36BF58

split-complementary

#3658BF #BF5836 #9DBF36

monochromatic

#1B2C60 #29428F #3658BF #607CD2 #90A4E0

Accessibility & contrast

On white

6.35

#3658BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#3658BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3658BF

6.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3658BF	#FFFFFF	#000000	##FFFFFF
##3658BF	1.00	6.35	3.31	6.35
#FFFFFF	6.35	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0566C3

Deuteranopia (green-blind)

#0059BD

Tritanopia (blue-blind)

#007183

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3658bf;
/* rgb */ color: rgb(54, 88, 191);
/* oklch */ color: oklch(49.5% 0.167 266.5);

Tailwind

colors: {
  custom: {
    50: '#7f86d3',
    500: '#3658bf',
    950: '#000000',
  },
}

SCSS

$custom: #3658bf;
$custom-light: #7f86d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3658bf",
  "rgb": {
    "r": 54,
    "g": 88,
    "b": 191
  },
  "hsl": {
    "h": 225.109,
    "s": 55.918,
    "l": 48.039
  },
  "oklch": {
    "l": 0.49515,
    "c": 0.1665,
    "h": 266.5
  },
  "luminance": 0.11525
}

Semantic roles & 50–950 ramp

primary

#3658BF

secondary

#CAB987

accent

#BA49DF

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3658BF

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

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