#3D57BB#3D57BB

#3D57BB is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.4% C 0.160 H 268.9°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#3D57BB
RGB	rgb(61, 87, 187)
HSL	hsl(228, 51%, 49%)
HSV	hsv(228, 67%, 73%)
CMYK	cmyk(67.4%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(40.24, 23.52, -55.73)
CIE-LCH	lch(40.24, 60.49, 292.88°)
OKLab	oklab(49.36% -0.0032 -0.1601)
OKLCH	oklch(49.36% 0.16 268.9)
XYZ	xyz(14.2992, 11.3950, 48.4500)
Luminance	0.1140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D57BB #BBA13D

analogous

#3D96BB #3D57BB #623DBB

triadic

#3D57BB #BB3D57 #57BB3D

tetradic

#3D57BB #BB3D96 #BBA13D #3DBB62

square

#3D57BB #BB3D96 #BBA13D #3DBB62

split-complementary

#3D57BB #BB623D #96BB3D

monochromatic

#1F2C5F #2E428D #3D57BB #687DCE #96A4DD

Accessibility & contrast

On white

6.40

#3D57BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3D57BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3D57BB

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D57BB	#FFFFFF	#000000	##FFFFFF
##3D57BB	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1165BF

Deuteranopia (green-blind)

#0059B9

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3d57bb;
/* rgb */ color: rgb(61, 87, 187);
/* oklch */ color: oklch(49.4% 0.160 268.9);

Tailwind

colors: {
  custom: {
    50: '#8186d0',
    500: '#3d57bb',
    950: '#000000',
  },
}

SCSS

$custom: #3d57bb;
$custom-light: #8186d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3d57bb",
  "rgb": {
    "r": 61,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 227.619,
    "s": 50.806,
    "l": 48.627
  },
  "oklch": {
    "l": 0.49358,
    "c": 0.16018,
    "h": 268.9
  },
  "luminance": 0.11396
}

Semantic roles & 50–950 ramp

primary

#3D57BB

secondary

#C8BC8C

accent

#BD4EDA

background

#F8F8FC

surface

#F0EFF9

border

#CBCAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3D57BB

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

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