#2A3FB0#2A3FB0

#2A3FB0 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.180 H 269.0°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#2A3FB0
RGB	rgb(42, 63, 176)
HSL	hsl(231, 61%, 43%)
HSV	hsv(231, 76%, 69%)
CMYK	cmyk(76.1%, 64.2%, 0%, 31%)
CIE-LAB	lab(32.21, 32.59, -62.34)
CIE-LCH	lch(32.21, 70.34, 297.60°)
OKLab	oklab(42.85% -0.0032 -0.1803)
OKLCH	oklch(42.85% 0.18 269)
XYZ	xyz(10.5661, 7.1807, 41.8950)
Luminance	0.0718 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A3FB0 #B09B2A

analogous

#2A82B0 #2A3FB0 #582AB0

triadic

#2A3FB0 #B02A3F #3FB02A

tetradic

#2A3FB0 #B02A82 #B09B2A #2AB058

square

#2A3FB0 #B02A82 #B09B2A #2AB058

split-complementary

#2A3FB0 #B0582A #82B02A

monochromatic

#121C4D #1E2D7F #2A3FB0 #455BD3 #7686DE

Accessibility & contrast

On white

8.62

#2A3FB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#2A3FB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A3FB0

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A3FB0	#FFFFFF	#000000	##FFFFFF
##2A3FB0	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B4

Deuteranopia (green-blind)

#0046AE

Tritanopia (blue-blind)

#005D71

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2a3fb0;
/* rgb */ color: rgb(42, 63, 176);
/* oklch */ color: oklch(42.8% 0.180 269.0);

Tailwind

colors: {
  custom: {
    50: '#7974c9',
    500: '#2a3fb0',
    950: '#000000',
  },
}

SCSS

$custom: #2a3fb0;
$custom-light: #7974c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2a3fb0",
  "rgb": {
    "r": 42,
    "g": 63,
    "b": 176
  },
  "hsl": {
    "h": 230.597,
    "s": 61.468,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42847,
    "c": 0.1803,
    "h": 269
  },
  "luminance": 0.07182
}

Semantic roles & 50–950 ramp

primary

#2A3FB0

secondary

#C6B870

accent

#CB43E5

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2A3FB0

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

Preview Lab → · Contrast checker → · Palette generator →