#2F3DB0#2F3DB0

#2F3DB0 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.7% C 0.181 H 270.9°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#2F3DB0
RGB	rgb(47, 61, 176)
HSL	hsl(233, 58%, 44%)
HSV	hsv(233, 73%, 69%)
CMYK	cmyk(73.3%, 65.3%, 0%, 31%)
CIE-LAB	lab(31.98, 34.44, -62.72)
CIE-LCH	lch(31.98, 71.55, 298.77°)
OKLab	oklab(42.74% 0.003 -0.1813)
OKLCH	oklch(42.74% 0.181 270.9)
XYZ	xyz(10.6748, 7.0753, 41.8690)
Luminance	0.0708 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.91

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F3DB0 #B0A22F

analogous

#2F7DB0 #2F3DB0 #612FB0

triadic

#2F3DB0 #B02F3D #3DB02F

tetradic

#2F3DB0 #B02F7D #B0A22F #2FB061

square

#2F3DB0 #B02F7D #B0A22F #2FB061

split-complementary

#2F3DB0 #B0612F #7DB02F

monochromatic

#151C4F #222C80 #2F3DB0 #4D5BCF #7D87DC

Accessibility & contrast

On white

8.69

#2F3DB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#2F3DB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3DB0

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3DB0	#FFFFFF	#000000	##FFFFFF
##2F3DB0	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B4

Deuteranopia (green-blind)

#0045AE

Tritanopia (blue-blind)

#005B71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2f3db0;
/* rgb */ color: rgb(47, 61, 176);
/* oklch */ color: oklch(42.7% 0.181 270.9);

Tailwind

colors: {
  custom: {
    50: '#7b72c9',
    500: '#2f3db0',
    950: '#000000',
  },
}

SCSS

$custom: #2f3db0;
$custom-light: #7b72c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3db0",
  "rgb": {
    "r": 47,
    "g": 61,
    "b": 176
  },
  "hsl": {
    "h": 233.488,
    "s": 57.848,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42741,
    "c": 0.18131,
    "h": 270.9
  },
  "luminance": 0.07076
}

Semantic roles & 50–950 ramp

primary

#2F3DB0

secondary

#C5BC76

accent

#D047E1

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F3DB0

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

Preview Lab → · Contrast checker → · Palette generator →