#2B3BB3#2B3BB3

#2B3BB3 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.5% C 0.189 H 270.0°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#2B3BB3
RGB	rgb(43, 59, 179)
HSL	hsl(233, 61%, 44%)
HSV	hsv(233, 76%, 70%)
CMYK	cmyk(76%, 67%, 0%, 29.8%)
CIE-LAB	lab(31.57, 36.35, -65.18)
CIE-LCH	lch(31.57, 74.64, 299.15°)
OKLab	oklab(42.47% -0.0001 -0.1886)
OKLCH	oklch(42.47% 0.189 270)
XYZ	xyz(10.6941, 6.8950, 43.4064)
Luminance	0.0690 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B3BB3 #B3A32B

analogous

#2B7FB3 #2B3BB3 #5F2BB3

triadic

#2B3BB3 #B32B3B #3BB32B

tetradic

#2B3BB3 #B32B7F #B3A32B #2BB35F

square

#2B3BB3 #B32B7F #B3A32B #2BB35F

split-complementary

#2B3BB3 #B35F2B #7FB32B

monochromatic

#131A50 #1F2B82 #2B3BB3 #4858D3 #7985DF

Accessibility & contrast

On white

8.83

#2B3BB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#2B3BB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B3BB3

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B3BB3	#FFFFFF	#000000	##FFFFFF
##2B3BB3	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B7

Deuteranopia (green-blind)

#0044B1

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2b3bb3;
/* rgb */ color: rgb(43, 59, 179);
/* oklch */ color: oklch(42.5% 0.189 270.0);

Tailwind

colors: {
  custom: {
    50: '#7a71cb',
    500: '#2b3bb3',
    950: '#000000',
  },
}

SCSS

$custom: #2b3bb3;
$custom-light: #7a71cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2b3bb3",
  "rgb": {
    "r": 43,
    "g": 59,
    "b": 179
  },
  "hsl": {
    "h": 232.941,
    "s": 61.261,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42469,
    "c": 0.1886,
    "h": 270
  },
  "luminance": 0.06896
}

Semantic roles & 50–950 ramp

primary

#2B3BB3

secondary

#C7BD73

accent

#D143E4

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2B3BB3

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

Preview Lab → · Contrast checker → · Palette generator →