#3657AD#3657AD

#3657AD is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.0% C 0.143 H 265.5°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#3657AD
RGB	rgb(54, 87, 173)
HSL	hsl(223, 52%, 45%)
HSV	hsv(223, 69%, 68%)
CMYK	cmyk(68.8%, 49.7%, 0%, 32.2%)
CIE-LAB	lab(38.93, 17.31, -49.63)
CIE-LCH	lch(38.93, 52.56, 289.23°)
OKLab	oklab(47.96% -0.0111 -0.1423)
OKLCH	oklch(47.96% 0.143 265.5)
XYZ	xyz(12.4697, 10.6166, 40.9191)
Luminance	0.1062 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657AD #AD8C36

analogous

#3693AD #3657AD #5036AD

triadic

#3657AD #AD3657 #57AD36

tetradic

#3657AD #AD3693 #AD8C36 #36AD50

square

#3657AD #AD3693 #AD8C36 #36AD50

split-complementary

#3657AD #AD5036 #93AD36

monochromatic

#192850 #27407E #3657AD #5676CA #859CD9

Accessibility & contrast

On white

6.72

#3657AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#3657AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657AD

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657AD	#FFFFFF	#000000	##FFFFFF
##3657AD	1.00	6.72	3.12	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2761B0

Deuteranopia (green-blind)

#0157AB

Tritanopia (blue-blind)

#006B7A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3657ad;
/* rgb */ color: rgb(54, 87, 173);
/* oklch */ color: oklch(48.0% 0.143 265.5);

Tailwind

colors: {
  custom: {
    50: '#7b85c6',
    500: '#3657ad',
    950: '#000000',
  },
}

SCSS

$custom: #3657ad;
$custom-light: #7b85c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3657ad",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 173
  },
  "hsl": {
    "h": 223.361,
    "s": 52.423,
    "l": 44.51
  },
  "oklch": {
    "l": 0.47963,
    "c": 0.14279,
    "h": 265.5
  },
  "luminance": 0.10618
}

Semantic roles & 50–950 ramp

primary

#3657AD

secondary

#C2AF7C

accent

#B44CDC

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3657AD

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

Preview Lab → · Contrast checker → · Palette generator →