#2F3FB7#2F3FB7

#2F3FB7 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.7% C 0.188 H 270.4°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#2F3FB7
RGB	rgb(47, 63, 183)
HSL	hsl(233, 59%, 45%)
HSV	hsv(233, 74%, 72%)
CMYK	cmyk(74.3%, 65.6%, 0%, 28.2%)
CIE-LAB	lab(33.09, 35.68, -65.06)
CIE-LCH	lch(33.09, 74.20, 298.74°)
OKLab	oklab(43.75% 0.0013 -0.1881)
OKLCH	oklch(43.75% 0.188 270.4)
XYZ	xyz(11.4941, 7.5770, 45.6473)
Luminance	0.0758 (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

#2F3FB7 #B7A72F

analogous

#2F83B7 #2F3FB7 #632FB7

triadic

#2F3FB7 #B72F3F #3FB72F

tetradic

#2F3FB7 #B72F83 #B7A72F #2FB763

square

#2F3FB7 #B72F83 #B7A72F #2FB763

split-complementary

#2F3FB7 #B7632F #83B72F

monochromatic

#161D56 #222E86 #2F3FB7 #5160D2 #828DDF

Accessibility & contrast

On white

8.35

#2F3FB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#2F3FB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3FB7

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3FB7	#FFFFFF	#000000	##FFFFFF
##2F3FB7	1.00	8.35	2.52	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BB

Deuteranopia (green-blind)

#0047B5

Tritanopia (blue-blind)

#005F75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #2f3fb7;
/* rgb */ color: rgb(47, 63, 183);
/* oklch */ color: oklch(43.7% 0.188 270.4);

Tailwind

colors: {
  custom: {
    50: '#7c74ce',
    500: '#2f3fb7',
    950: '#000000',
  },
}

SCSS

$custom: #2f3fb7;
$custom-light: #7c74ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3fb7",
  "rgb": {
    "r": 47,
    "g": 63,
    "b": 183
  },
  "hsl": {
    "h": 232.941,
    "s": 59.13,
    "l": 45.098
  },
  "oklch": {
    "l": 0.43745,
    "c": 0.18812,
    "h": 270.4
  },
  "luminance": 0.07578
}

Semantic roles & 50–950 ramp

primary

#2F3FB7

secondary

#C8BF7A

accent

#D045E2

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2F3FB7

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

Preview Lab → · Contrast checker → · Palette generator →