#2A3FB8#2A3FB8

#2A3FB8 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.6% C 0.191 H 268.9°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#2A3FB8
RGB	rgb(42, 63, 184)
HSL	hsl(231, 63%, 44%)
HSV	hsv(231, 77%, 72%)
CMYK	cmyk(77.2%, 65.8%, 0%, 27.8%)
CIE-LAB	lab(32.93, 35.52, -65.91)
CIE-LCH	lch(32.93, 74.87, 298.32°)
OKLab	oklab(43.59% -0.0036 -0.1907)
OKLCH	oklch(43.59% 0.191 268.9)
XYZ	xyz(11.3811, 7.5067, 46.1872)
Luminance	0.0751 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.80

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A3FB8 #B8A32A

analogous

#2A86B8 #2A3FB8 #5C2AB8

triadic

#2A3FB8 #B82A3F #3FB82A

tetradic

#2A3FB8 #B82A86 #B8A32A #2AB85C

square

#2A3FB8 #B82A86 #B8A32A #2AB85C

split-complementary

#2A3FB8 #B85C2A #86B82A

monochromatic

#131D54 #1F2E86 #2A3FB8 #4A5ED6 #7B8AE1

Accessibility & contrast

On white

8.39

#2A3FB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#2A3FB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A3FB8

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A3FB8	#FFFFFF	#000000	##FFFFFF
##2A3FB8	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BC

Deuteranopia (green-blind)

#0047B6

Tritanopia (blue-blind)

#005F76

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2a3fb8;
/* rgb */ color: rgb(42, 63, 184);
/* oklch */ color: oklch(43.6% 0.191 268.9);

Tailwind

colors: {
  custom: {
    50: '#7b74ce',
    500: '#2a3fb8',
    950: '#000000',
  },
}

SCSS

$custom: #2a3fb8;
$custom-light: #7b74ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2a3fb8",
  "rgb": {
    "r": 42,
    "g": 63,
    "b": 184
  },
  "hsl": {
    "h": 231.127,
    "s": 62.832,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43594,
    "c": 0.19074,
    "h": 268.9
  },
  "luminance": 0.07508
}

Semantic roles & 50–950 ramp

primary

#2A3FB8

secondary

#C9BD75

accent

#CE42E6

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2A3FB8

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

Preview Lab → · Contrast checker → · Palette generator →