#2F40B0#2F40B0

#2F40B0 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.3% C 0.178 H 270.3°. Best body text is #FFFFFF at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#2F40B0
RGB	rgb(47, 64, 176)
HSL	hsl(232, 58%, 44%)
HSV	hsv(232, 73%, 69%)
CMYK	cmyk(73.3%, 63.6%, 0%, 31%)
CIE-LAB	lab(32.71, 32.51, -61.52)
CIE-LCH	lch(32.71, 69.58, 297.86°)
OKLab	oklab(43.28% 0.001 -0.1777)
OKLCH	oklch(43.28% 0.178 270.3)
XYZ	xyz(10.8395, 7.4046, 41.9238)
Luminance	0.0741 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F40B0 #B09F2F

analogous

#2F80B0 #2F40B0 #5E2FB0

triadic

#2F40B0 #B02F40 #40B02F

tetradic

#2F40B0 #B02F80 #B09F2F #2FB05E

square

#2F40B0 #B02F80 #B09F2F #2FB05E

split-complementary

#2F40B0 #B05E2F #80B02F

monochromatic

#151D4F #222E80 #2F40B0 #4D5ECF #7D8ADC

Accessibility & contrast

On white

8.46

#2F40B0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#2F40B0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F40B0

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F40B0	#FFFFFF	#000000	##FFFFFF
##2F40B0	1.00	8.46	2.48	8.46
#FFFFFF	8.46	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B4

Deuteranopia (green-blind)

#0047AE

Tritanopia (blue-blind)

#005D72

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2f40b0;
/* rgb */ color: rgb(47, 64, 176);
/* oklch */ color: oklch(43.3% 0.178 270.3);

Tailwind

colors: {
  custom: {
    50: '#7a74c9',
    500: '#2f40b0',
    950: '#000000',
  },
}

SCSS

$custom: #2f40b0;
$custom-light: #7a74c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2f40b0",
  "rgb": {
    "r": 47,
    "g": 64,
    "b": 176
  },
  "hsl": {
    "h": 232.093,
    "s": 57.848,
    "l": 43.725
  },
  "oklch": {
    "l": 0.43279,
    "c": 0.17775,
    "h": 270.3
  },
  "luminance": 0.07406
}

Semantic roles & 50–950 ramp

primary

#2F40B0

secondary

#C5BB76

accent

#CD47E1

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F40B0

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

Preview Lab → · Contrast checker → · Palette generator →