#3540A3#3540A3

#3540A3 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.5% C 0.159 H 272.8°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#3540A3
RGB	rgb(53, 64, 163)
HSL	hsl(234, 51%, 42%)
HSV	hsv(234, 67%, 64%)
CMYK	cmyk(67.5%, 60.7%, 0%, 36.1%)
CIE-LAB	lab(31.96, 28.61, -54.95)
CIE-LCH	lch(31.96, 61.95, 297.51°)
OKLab	oklab(42.48% 0.0078 -0.1583)
OKLCH	oklch(42.48% 0.159 272.8)
XYZ	xyz(9.9102, 7.0671, 35.4851)
Luminance	0.0707 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3540A3 #A39835

analogous

#3577A3 #3540A3 #6135A3

triadic

#3540A3 #A33540 #40A335

tetradic

#3540A3 #A33577 #A39835 #35A361

square

#3540A3 #A33577 #A39835 #35A361

split-complementary

#3540A3 #A36135 #77A335

monochromatic

#171C47 #262E75 #3540A3 #4F5BC6 #7E86D5

Accessibility & contrast

On white

8.70

#3540A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#3540A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3540A3

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3540A3	#FFFFFF	#000000	##FFFFFF
##3540A3	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A6

Deuteranopia (green-blind)

#0046A1

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #3540a3;
/* rgb */ color: rgb(53, 64, 163);
/* oklch */ color: oklch(42.5% 0.159 272.8);

Tailwind

colors: {
  custom: {
    50: '#7a74bf',
    500: '#3540a3',
    950: '#000000',
  },
}

SCSS

$custom: #3540a3;
$custom-light: #7a74bf;
$custom-dark: #000000;

JSON

{
  "hex": "#3540a3",
  "rgb": {
    "r": 53,
    "g": 64,
    "b": 163
  },
  "hsl": {
    "h": 234,
    "s": 50.926,
    "l": 42.353
  },
  "oklch": {
    "l": 0.42477,
    "c": 0.15852,
    "h": 272.8
  },
  "luminance": 0.07068
}

Semantic roles & 50–950 ramp

primary

#3540A3

secondary

#BEB776

accent

#CC4DDA

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #3540A3

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

Preview Lab → · Contrast checker → · Palette generator →