#3E57BB#3E57BB

#3E57BB is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.4% C 0.160 H 269.2°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#3E57BB
RGB	rgb(62, 87, 187)
HSL	hsl(228, 50%, 49%)
HSV	hsv(228, 67%, 73%)
CMYK	cmyk(66.8%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(40.29, 23.68, -55.64)
CIE-LCH	lch(40.29, 60.47, 293.05°)
OKLab	oklab(49.41% -0.0022 -0.1599)
OKLCH	oklch(49.41% 0.16 269.2)
XYZ	xyz(14.3614, 11.4270, 48.4529)
Luminance	0.1143 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3E57BB #BBA23E

analogous

#3E96BB #3E57BB #643EBB

triadic

#3E57BB #BB3E57 #57BB3E

tetradic

#3E57BB #BB3E96 #BBA23E #3EBB64

square

#3E57BB #BB3E96 #BBA23E #3EBB64

split-complementary

#3E57BB #BB643E #96BB3E

monochromatic

#202C5F #2F428D #3E57BB #697DCD #97A5DC

Accessibility & contrast

On white

6.39

#3E57BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#3E57BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3E57BB

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3E57BB	#FFFFFF	#000000	##FFFFFF
##3E57BB	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)

#1265BF

Deuteranopia (green-blind)

#005AB9

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3e57bb;
/* rgb */ color: rgb(62, 87, 187);
/* oklch */ color: oklch(49.4% 0.160 269.2);

Tailwind

colors: {
  custom: {
    50: '#8186d0',
    500: '#3e57bb',
    950: '#000000',
  },
}

SCSS

$custom: #3e57bb;
$custom-light: #8186d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3e57bb",
  "rgb": {
    "r": 62,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 228,
    "s": 50.201,
    "l": 48.824
  },
  "oklch": {
    "l": 0.49412,
    "c": 0.15989,
    "h": 269.2
  },
  "luminance": 0.11428
}

Semantic roles & 50–950 ramp

primary

#3E57BB

secondary

#C8BC8D

accent

#BE4EDA

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0C0B14

muted

#7D7C82

Preview Lab

Preview with #3E57BB

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

Preview Lab → · Contrast checker → · Palette generator →