#2A3FB3#2A3FB3

#2A3FB3 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.1% C 0.184 H 269.0°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#2A3FB3
RGB	rgb(42, 63, 179)
HSL	hsl(231, 62%, 43%)
HSV	hsv(231, 77%, 70%)
CMYK	cmyk(76.5%, 64.8%, 0%, 29.8%)
CIE-LAB	lab(32.48, 33.70, -63.68)
CIE-LCH	lch(32.48, 72.05, 297.88°)
OKLab	oklab(43.13% -0.0034 -0.1842)
OKLCH	oklch(43.13% 0.184 269)
XYZ	xyz(10.8662, 7.3007, 43.4756)
Luminance	0.0730 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A3FB3 #B39E2A

analogous

#2A83B3 #2A3FB3 #592AB3

triadic

#2A3FB3 #B32A3F #3FB32A

tetradic

#2A3FB3 #B32A83 #B39E2A #2AB359

square

#2A3FB3 #B32A83 #B39E2A #2AB359

split-complementary

#2A3FB3 #B3592A #83B32A

monochromatic

#131C50 #1E2E81 #2A3FB3 #465CD4 #7888DF

Accessibility & contrast

On white

8.54

#2A3FB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#2A3FB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A3FB3

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A3FB3	#FFFFFF	#000000	##FFFFFF
##2A3FB3	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B7

Deuteranopia (green-blind)

#0046B1

Tritanopia (blue-blind)

#005E73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2a3fb3;
/* rgb */ color: rgb(42, 63, 179);
/* oklch */ color: oklch(43.1% 0.184 269.0);

Tailwind

colors: {
  custom: {
    50: '#7974cb',
    500: '#2a3fb3',
    950: '#000000',
  },
}

SCSS

$custom: #2a3fb3;
$custom-light: #7974cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2a3fb3",
  "rgb": {
    "r": 42,
    "g": 63,
    "b": 179
  },
  "hsl": {
    "h": 230.803,
    "s": 61.991,
    "l": 43.333
  },
  "oklch": {
    "l": 0.43125,
    "c": 0.18424,
    "h": 269
  },
  "luminance": 0.07302
}

Semantic roles & 50–950 ramp

primary

#2A3FB3

secondary

#C7BA72

accent

#CC43E5

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2A3FB3

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

Preview Lab → · Contrast checker → · Palette generator →