#2F3DB1#2F3DB1

#2F3DB1 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.183 H 270.9°. Best body text is #FFFFFF at 8.67:1 contrast (WCAG AA passes).

Color values

HEX	#2F3DB1
RGB	rgb(47, 61, 177)
HSL	hsl(234, 58%, 44%)
HSV	hsv(234, 73%, 69%)
CMYK	cmyk(73.4%, 65.5%, 0%, 30.6%)
CIE-LAB	lab(32.07, 34.80, -63.17)
CIE-LCH	lch(32.07, 72.12, 298.85°)
OKLab	oklab(42.83% 0.0029 -0.1826)
OKLCH	oklch(42.83% 0.183 270.9)
XYZ	xyz(10.7741, 7.1150, 42.3920)
Luminance	0.0712 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.81

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F3DB1 #B1A32F

analogous

#2F7EB1 #2F3DB1 #622FB1

triadic

#2F3DB1 #B12F3D #3DB12F

tetradic

#2F3DB1 #B12F7E #B1A32F #2FB162

square

#2F3DB1 #B12F7E #B1A32F #2FB162

split-complementary

#2F3DB1 #B1622F #7EB12F

monochromatic

#151C50 #222C81 #2F3DB1 #4D5BD0 #7E88DD

Accessibility & contrast

On white

8.67

#2F3DB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#2F3DB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3DB1

8.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3DB1	#FFFFFF	#000000	##FFFFFF
##2F3DB1	1.00	8.67	2.42	8.67
#FFFFFF	8.67	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B5

Deuteranopia (green-blind)

#0045AF

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2f3db1;
/* rgb */ color: rgb(47, 61, 177);
/* oklch */ color: oklch(42.8% 0.183 270.9);

Tailwind

colors: {
  custom: {
    50: '#7b72c9',
    500: '#2f3db1',
    950: '#000000',
  },
}

SCSS

$custom: #2f3db1;
$custom-light: #7b72c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3db1",
  "rgb": {
    "r": 47,
    "g": 61,
    "b": 177
  },
  "hsl": {
    "h": 233.538,
    "s": 58.036,
    "l": 43.922
  },
  "oklch": {
    "l": 0.42834,
    "c": 0.18262,
    "h": 270.9
  },
  "luminance": 0.07116
}

Semantic roles & 50–950 ramp

primary

#2F3DB1

secondary

#C5BD76

accent

#D147E1

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F3DB1

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

Preview Lab → · Contrast checker → · Palette generator →