#3657BF#3657BF

#3657BF is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.3% C 0.168 H 266.8°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#3657BF
RGB	rgb(54, 87, 191)
HSL	hsl(226, 56%, 48%)
HSV	hsv(226, 72%, 75%)
CMYK	cmyk(71.7%, 54.5%, 0%, 25.1%)
CIE-LAB	lab(40.18, 23.96, -58.17)
CIE-LCH	lch(40.18, 62.91, 292.38°)
OKLab	oklab(49.31% -0.0094 -0.1675)
OKLCH	oklch(49.31% 0.168 266.8)
XYZ	xyz(14.3302, 11.3608, 50.7177)
Luminance	0.1136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657BF #BF9E36

analogous

#369CBF #3657BF #5936BF

triadic

#3657BF #BF3657 #57BF36

tetradic

#3657BF #BF369C #BF9E36 #36BF59

square

#3657BF #BF369C #BF9E36 #36BF59

split-complementary

#3657BF #BF5936 #9CBF36

monochromatic

#1B2C60 #29418F #3657BF #607CD2 #90A3E0

Accessibility & contrast

On white

6.42

#3657BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#3657BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657BF

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657BF	#FFFFFF	#000000	##FFFFFF
##3657BF	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065C3

Deuteranopia (green-blind)

#0059BD

Tritanopia (blue-blind)

#007082

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3657bf;
/* rgb */ color: rgb(54, 87, 191);
/* oklch */ color: oklch(49.3% 0.168 266.8);

Tailwind

colors: {
  custom: {
    50: '#7f85d3',
    500: '#3657bf',
    950: '#000000',
  },
}

SCSS

$custom: #3657bf;
$custom-light: #7f85d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3657bf",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 191
  },
  "hsl": {
    "h": 225.547,
    "s": 55.918,
    "l": 48.039
  },
  "oklch": {
    "l": 0.49313,
    "c": 0.16774,
    "h": 266.8
  },
  "luminance": 0.11362
}

Semantic roles & 50–950 ramp

primary

#3657BF

secondary

#CABA87

accent

#BB49DF

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3657BF

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

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