#3657AC#3657AC

#3657AC is a mid, vivid blue. Relative luminance 0.106; OKLCH L 47.9% C 0.141 H 265.4°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#3657AC
RGB	rgb(54, 87, 172)
HSL	hsl(223, 52%, 44%)
HSV	hsv(223, 69%, 67%)
CMYK	cmyk(68.6%, 49.4%, 0%, 32.5%)
CIE-LAB	lab(38.86, 16.94, -49.14)
CIE-LCH	lch(38.86, 51.98, 289.02°)
OKLab	oklab(47.89% -0.0113 -0.1409)
OKLCH	oklch(47.89% 0.141 265.4)
XYZ	xyz(12.3733, 10.5780, 40.4114)
Luminance	0.1058 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3657AC #AC8B36

analogous

#3692AC #3657AC #5036AC

triadic

#3657AC #AC3657 #57AC36

tetradic

#3657AC #AC3692 #AC8B36 #36AC50

square

#3657AC #AC3692 #AC8B36 #36AC50

split-complementary

#3657AC #AC5036 #92AC36

monochromatic

#19284F #273F7D #3657AC #5576CA #849CD8

Accessibility & contrast

On white

6.74

#3657AC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#3657AC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3657AC

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3657AC	#FFFFFF	#000000	##FFFFFF
##3657AC	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2861AF

Deuteranopia (green-blind)

#0556AA

Tritanopia (blue-blind)

#006B79

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3657ac;
/* rgb */ color: rgb(54, 87, 172);
/* oklch */ color: oklch(47.9% 0.141 265.4);

Tailwind

colors: {
  custom: {
    50: '#7b85c5',
    500: '#3657ac',
    950: '#000000',
  },
}

SCSS

$custom: #3657ac;
$custom-light: #7b85c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3657ac",
  "rgb": {
    "r": 54,
    "g": 87,
    "b": 172
  },
  "hsl": {
    "h": 223.22,
    "s": 52.212,
    "l": 44.314
  },
  "oklch": {
    "l": 0.47891,
    "c": 0.14137,
    "h": 265.4
  },
  "luminance": 0.10579
}

Semantic roles & 50–950 ramp

primary

#3657AC

secondary

#C2AE7C

accent

#B44CDC

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3657AC

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

Preview Lab → · Contrast checker → · Palette generator →