#2A3FB7#2A3FB7

#2A3FB7 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.5% C 0.189 H 268.9°. Best body text is #FFFFFF at 8.42:1 contrast (WCAG AA passes).

Color values

HEX	#2A3FB7
RGB	rgb(42, 63, 183)
HSL	hsl(231, 63%, 44%)
HSV	hsv(231, 77%, 72%)
CMYK	cmyk(77%, 65.6%, 0%, 28.2%)
CIE-LAB	lab(32.84, 35.16, -65.46)
CIE-LCH	lch(32.84, 74.31, 298.24°)
OKLab	oklab(43.5% -0.0036 -0.1894)
OKLCH	oklch(43.5% 0.189 268.9)
XYZ	xyz(11.2766, 7.4649, 45.6371)
Luminance	0.0747 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.88

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A3FB7 #B7A22A

analogous

#2A86B7 #2A3FB7 #5C2AB7

triadic

#2A3FB7 #B72A3F #3FB72A

tetradic

#2A3FB7 #B72A86 #B7A22A #2AB75C

square

#2A3FB7 #B72A86 #B7A22A #2AB75C

split-complementary

#2A3FB7 #B75C2A #86B72A

monochromatic

#131D53 #1F2E85 #2A3FB7 #495ED5 #7B8AE1

Accessibility & contrast

On white

8.42

#2A3FB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#2A3FB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A3FB7

8.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A3FB7	#FFFFFF	#000000	##FFFFFF
##2A3FB7	1.00	8.42	2.49	8.42
#FFFFFF	8.42	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BB

Deuteranopia (green-blind)

#0047B5

Tritanopia (blue-blind)

#005F75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2a3fb7;
/* rgb */ color: rgb(42, 63, 183);
/* oklch */ color: oklch(43.5% 0.189 268.9);

Tailwind

colors: {
  custom: {
    50: '#7a74ce',
    500: '#2a3fb7',
    950: '#000000',
  },
}

SCSS

$custom: #2a3fb7;
$custom-light: #7a74ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2a3fb7",
  "rgb": {
    "r": 42,
    "g": 63,
    "b": 183
  },
  "hsl": {
    "h": 231.064,
    "s": 62.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.435,
    "c": 0.18945,
    "h": 268.9
  },
  "luminance": 0.07466
}

Semantic roles & 50–950 ramp

primary

#2A3FB7

secondary

#C9BC74

accent

#CD42E6

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2A3FB7

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

Preview Lab → · Contrast checker → · Palette generator →