#2B3FB3#2B3FB3

#2B3FB3 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.2% C 0.184 H 269.2°. Best body text is #FFFFFF at 8.52:1 contrast (WCAG AA passes).

Color values

HEX	#2B3FB3
RGB	rgb(43, 63, 179)
HSL	hsl(231, 61%, 44%)
HSV	hsv(231, 76%, 70%)
CMYK	cmyk(76%, 64.8%, 0%, 29.8%)
CIE-LAB	lab(32.53, 33.80, -63.60)
CIE-LCH	lch(32.53, 72.03, 297.99°)
OKLab	oklab(43.17% -0.0024 -0.184)
OKLCH	oklch(43.17% 0.184 269.2)
XYZ	xyz(10.9077, 7.3221, 43.4775)
Luminance	0.0732 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3FB3 #B39F2B

analogous

#2B83B3 #2B3FB3 #5B2BB3

triadic

#2B3FB3 #B32B3F #3FB32B

tetradic

#2B3FB3 #B32B83 #B39F2B #2BB35B

square

#2B3FB3 #B32B83 #B39F2B #2BB35B

split-complementary

#2B3FB3 #B35B2B #83B32B

monochromatic

#131C50 #1F2E82 #2B3FB3 #485DD3 #7988DF

Accessibility & contrast

On white

8.52

#2B3FB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#2B3FB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3FB3

8.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3FB3	#FFFFFF	#000000	##FFFFFF
##2B3FB3	1.00	8.52	2.46	8.52
#FFFFFF	8.52	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.52	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: #2b3fb3;
/* rgb */ color: rgb(43, 63, 179);
/* oklch */ color: oklch(43.2% 0.184 269.2);

Tailwind

colors: {
  custom: {
    50: '#7a74cb',
    500: '#2b3fb3',
    950: '#000000',
  },
}

SCSS

$custom: #2b3fb3;
$custom-light: #7a74cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3fb3",
  "rgb": {
    "r": 43,
    "g": 63,
    "b": 179
  },
  "hsl": {
    "h": 231.176,
    "s": 61.261,
    "l": 43.529
  },
  "oklch": {
    "l": 0.43173,
    "c": 0.18398,
    "h": 269.2
  },
  "luminance": 0.07323
}

Semantic roles & 50–950 ramp

primary

#2B3FB3

secondary

#C7BB73

accent

#CD43E4

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2B3FB3

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

Preview Lab → · Contrast checker → · Palette generator →