#3557BD#3557BD

#3557BD is a mid, vivid blue. Relative luminance 0.112; OKLCH L 49.1% C 0.165 H 266.4°. Best body text is #FFFFFF at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#3557BD
RGB	rgb(53, 87, 189)
HSL	hsl(225, 56%, 47%)
HSV	hsv(225, 72%, 74%)
CMYK	cmyk(72%, 54%, 0%, 25.9%)
CIE-LAB	lab(39.99, 23.08, -57.31)
CIE-LCH	lch(39.99, 61.79, 291.94°)
OKLab	oklab(49.11% -0.0104 -0.165)
OKLCH	oklch(49.11% 0.165 266.4)
XYZ	xyz(14.0585, 11.2459, 49.5640)
Luminance	0.1125 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3557BD #BD9B35

analogous

#359BBD #3557BD #5735BD

triadic

#3557BD #BD3557 #57BD35

tetradic

#3557BD #BD359B #BD9B35 #35BD57

square

#3557BD #BD359B #BD9B35 #35BD57

split-complementary

#3557BD #BD5735 #9BBD35

monochromatic

#1A2B5D #28418D #3557BD #5D7BD2 #8DA2DF

Accessibility & contrast

On white

6.46

#3557BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.25

#3557BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3557BD

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3557BD	#FFFFFF	#000000	##FFFFFF
##3557BD	1.00	6.46	3.25	6.46
#FFFFFF	6.46	1.00	21.00	1.00
#000000	3.25	21.00	1.00	21.00
##FFFFFF	6.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0565C1

Deuteranopia (green-blind)

#0058BB

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3557bd;
/* rgb */ color: rgb(53, 87, 189);
/* oklch */ color: oklch(49.1% 0.165 266.4);

Tailwind

colors: {
  custom: {
    50: '#7e85d2',
    500: '#3557bd',
    950: '#000000',
  },
}

SCSS

$custom: #3557bd;
$custom-light: #7e85d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3557bd",
  "rgb": {
    "r": 53,
    "g": 87,
    "b": 189
  },
  "hsl": {
    "h": 225,
    "s": 56.198,
    "l": 47.451
  },
  "oklch": {
    "l": 0.49112,
    "c": 0.16531,
    "h": 266.4
  },
  "luminance": 0.11247
}

Semantic roles & 50–950 ramp

primary

#3557BD

secondary

#CAB884

accent

#BA48DF

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3557BD

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

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