#2F3BB0#2F3BB0

#2F3BB0 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.4% C 0.184 H 271.3°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#2F3BB0
RGB	rgb(47, 59, 176)
HSL	hsl(234, 58%, 44%)
HSV	hsv(234, 73%, 69%)
CMYK	cmyk(73.3%, 66.5%, 0%, 31%)
CIE-LAB	lab(31.50, 35.71, -63.50)
CIE-LCH	lch(31.50, 72.85, 299.35°)
OKLab	oklab(42.39% 0.0043 -0.1836)
OKLCH	oklch(42.39% 0.184 271.3)
XYZ	xyz(10.5701, 6.8658, 41.8340)
Luminance	0.0687 (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

#2F3BB0 #B0A42F

analogous

#2F7BB0 #2F3BB0 #632FB0

triadic

#2F3BB0 #B02F3B #3BB02F

tetradic

#2F3BB0 #B02F7B #B0A42F #2FB063

square

#2F3BB0 #B02F7B #B0A42F #2FB063

split-complementary

#2F3BB0 #B0632F #7BB02F

monochromatic

#151B4F #222B80 #2F3BB0 #4D59CF #7D86DC

Accessibility & contrast

On white

8.85

#2F3BB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#2F3BB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3BB0

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3BB0	#FFFFFF	#000000	##FFFFFF
##2F3BB0	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B4

Deuteranopia (green-blind)

#0044AE

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2f3bb0;
/* rgb */ color: rgb(47, 59, 176);
/* oklch */ color: oklch(42.4% 0.184 271.3);

Tailwind

colors: {
  custom: {
    50: '#7b71c9',
    500: '#2f3bb0',
    950: '#000000',
  },
}

SCSS

$custom: #2f3bb0;
$custom-light: #7b71c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3bb0",
  "rgb": {
    "r": 47,
    "g": 59,
    "b": 176
  },
  "hsl": {
    "h": 234.419,
    "s": 57.848,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42392,
    "c": 0.18364,
    "h": 271.3
  },
  "luminance": 0.06867
}

Semantic roles & 50–950 ramp

primary

#2F3BB0

secondary

#C5BE76

accent

#D347E1

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2F3BB0

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

Preview Lab → · Contrast checker → · Palette generator →