#2B1FA5#2B1FA5

#2B1FA5 is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.9% C 0.199 H 274.5°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#2B1FA5
RGB	rgb(43, 31, 165)
HSL	hsl(245, 68%, 38%)
HSV	hsv(245, 81%, 65%)
CMYK	cmyk(73.9%, 81.2%, 0%, 35.3%)
CIE-LAB	lab(24.35, 47.68, -68.68)
CIE-LCH	lch(24.35, 83.61, 304.77°)
OKLab	oklab(36.89% 0.0155 -0.1986)
OKLCH	oklch(36.89% 0.199 274.5)
XYZ	xyz(8.2755, 4.2093, 35.9664)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B1FA5 #99A51F

analogous

#1F56A5 #2B1FA5 #6E1FA5

triadic

#2B1FA5 #A52B1F #1FA52B

tetradic

#2B1FA5 #A51F56 #99A51F #1FA56E

square

#2B1FA5 #A51F56 #99A51F #1FA56E

split-complementary

#2B1FA5 #A56E1F #56A51F

monochromatic

#100C3E #1E1571 #2B1FA5 #3A2AD7 #695EE1

Accessibility & contrast

On white

11.40

#2B1FA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#2B1FA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1FA5

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B1FA5	#FFFFFF	#000000	##FFFFFF
##2B1FA5	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040A9

Deuteranopia (green-blind)

#0034A3

Tritanopia (blue-blind)

#004963

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #2b1fa5;
/* rgb */ color: rgb(43, 31, 165);
/* oklch */ color: oklch(36.9% 0.199 274.5);

Tailwind

colors: {
  custom: {
    50: '#795fc1',
    500: '#2b1fa5',
    950: '#000000',
  },
}

SCSS

$custom: #2b1fa5;
$custom-light: #795fc1;
$custom-dark: #000000;

JSON

{
  "hex": "#2b1fa5",
  "rgb": {
    "r": 43,
    "g": 31,
    "b": 165
  },
  "hsl": {
    "h": 245.373,
    "s": 68.367,
    "l": 38.431
  },
  "oklch": {
    "l": 0.36892,
    "c": 0.19924,
    "h": 274.5
  },
  "luminance": 0.0421
}

Semantic roles & 50–950 ramp

primary

#2B1FA5

secondary

#BCC55B

accent

#EB3DDC

background

#F8F5FC

surface

#EFE9F8

border

#CAC5D1

text

#0B0512

muted

#7C7981

Preview Lab

Preview with #2B1FA5

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

Preview Lab → · Contrast checker → · Palette generator →