#3B57CA#3B57CA

#3B57CA is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.4% C 0.181 H 268.6°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#3B57CA
RGB	rgb(59, 87, 202)
HSL	hsl(228, 57%, 51%)
HSV	hsv(228, 71%, 79%)
CMYK	cmyk(70.8%, 56.9%, 0%, 20.8%)
CIE-LAB	lab(41.23, 28.64, -62.84)
CIE-LCH	lch(41.23, 69.06, 294.50°)
OKLab	oklab(50.42% -0.0043 -0.1811)
OKLCH	oklch(50.42% 0.181 268.6)
XYZ	xyz(15.8688, 12.0089, 57.3473)
Luminance	0.1201 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B57CA #CAAE3B

analogous

#3B9ECA #3B57CA #663BCA

triadic

#3B57CA #CA3B57 #57CA3B

tetradic

#3B57CA #CA3B9E #CAAE3B #3BCA66

square

#3B57CA #CA3B9E #CAAE3B #3BCA66

split-complementary

#3B57CA #CA663B #9ECA3B

monochromatic

#1E2D6D #2B419D #3B57CA #6B80D7 #9BAAE4

Accessibility & contrast

On white

6.17

#3B57CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#3B57CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B57CA

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B57CA	#FFFFFF	#000000	##FFFFFF
##3B57CA	1.00	6.17	3.40	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CE

Deuteranopia (green-blind)

#005BC8

Tritanopia (blue-blind)

#007388

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3b57ca;
/* rgb */ color: rgb(59, 87, 202);
/* oklch */ color: oklch(50.4% 0.181 268.6);

Tailwind

colors: {
  custom: {
    50: '#8386db',
    500: '#3b57ca',
    950: '#000000',
  },
}

SCSS

$custom: #3b57ca;
$custom-light: #8386db;
$custom-dark: #000000;

JSON

{
  "hex": "#3b57ca",
  "rgb": {
    "r": 59,
    "g": 87,
    "b": 202
  },
  "hsl": {
    "h": 228.252,
    "s": 57.43,
    "l": 51.176
  },
  "oklch": {
    "l": 0.50422,
    "c": 0.18117,
    "h": 268.6
  },
  "luminance": 0.1201
}

Semantic roles & 50–950 ramp

primary

#3B57CA

secondary

#D0C491

accent

#C347E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3B57CA

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

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