#2F3FBB#2F3FBB

#2F3FBB is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.1% C 0.193 H 270.3°. Best body text is #FFFFFF at 8.24:1 contrast (WCAG AA passes).

Color values

HEX	#2F3FBB
RGB	rgb(47, 63, 187)
HSL	hsl(233, 60%, 46%)
HSV	hsv(233, 75%, 73%)
CMYK	cmyk(74.9%, 66.3%, 0%, 26.7%)
CIE-LAB	lab(33.45, 37.11, -66.82)
CIE-LCH	lch(33.45, 76.44, 299.05°)
OKLab	oklab(44.12% 0.001 -0.1933)
OKLCH	oklch(44.12% 0.193 270.3)
XYZ	xyz(11.9164, 7.7459, 47.8712)
Luminance	0.0775 (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

#2F3FBB #BBAB2F

analogous

#2F85BB #2F3FBB #652FBB

triadic

#2F3FBB #BB2F3F #3FBB2F

tetradic

#2F3FBB #BB2F85 #BBAB2F #2FBB65

square

#2F3FBB #BB2F85 #BBAB2F #2FBB65

split-complementary

#2F3FBB #BB652F #85BB2F

monochromatic

#161E59 #232F8A #2F3FBB #5362D4 #848FE0

Accessibility & contrast

On white

8.24

#2F3FBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#2F3FBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3FBB

8.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3FBB	#FFFFFF	#000000	##FFFFFF
##2F3FBB	1.00	8.24	2.55	8.24
#FFFFFF	8.24	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BF

Deuteranopia (green-blind)

#0048B9

Tritanopia (blue-blind)

#006077

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2f3fbb;
/* rgb */ color: rgb(47, 63, 187);
/* oklch */ color: oklch(44.1% 0.193 270.3);

Tailwind

colors: {
  custom: {
    50: '#7d74d1',
    500: '#2f3fbb',
    950: '#000000',
  },
}

SCSS

$custom: #2f3fbb;
$custom-light: #7d74d1;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3fbb",
  "rgb": {
    "r": 47,
    "g": 63,
    "b": 187
  },
  "hsl": {
    "h": 233.143,
    "s": 59.829,
    "l": 45.882
  },
  "oklch": {
    "l": 0.4412,
    "c": 0.19329,
    "h": 270.3
  },
  "luminance": 0.07747
}

Semantic roles & 50–950 ramp

primary

#2F3FBB

secondary

#C9C17C

accent

#D145E3

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2F3FBB

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

Preview Lab → · Contrast checker → · Palette generator →