#2B23A1#2B23A1

#2B23A1 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.9% C 0.191 H 274.5°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#2B23A1
RGB	rgb(43, 35, 161)
HSL	hsl(244, 64%, 38%)
HSV	hsv(244, 78%, 63%)
CMYK	cmyk(73.3%, 78.3%, 0%, 36.9%)
CIE-LAB	lab(24.60, 44.37, -65.84)
CIE-LCH	lch(24.60, 79.39, 303.98°)
OKLab	oklab(36.93% 0.0149 -0.1904)
OKLCH	oklch(36.93% 0.191 274.5)
XYZ	xyz(8.0282, 4.2881, 34.1159)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B23A1 #99A123

analogous

#235AA1 #2B23A1 #6A23A1

triadic

#2B23A1 #A12B23 #23A12B

tetradic

#2B23A1 #A1235A #99A123 #23A16A

square

#2B23A1 #A1235A #99A123 #23A16A

split-complementary

#2B23A1 #A16A23 #5AA123

monochromatic

#100D3C #1E186F #2B23A1 #3A2FD2 #6962DD

Accessibility & contrast

On white

11.30

#2B23A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#2B23A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B23A1

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B23A1	#FFFFFF	#000000	##FFFFFF
##2B23A1	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040A5

Deuteranopia (green-blind)

#00349F

Tritanopia (blue-blind)

#004961

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #2b23a1;
/* rgb */ color: rgb(43, 35, 161);
/* oklch */ color: oklch(36.9% 0.191 274.5);

Tailwind

colors: {
  custom: {
    50: '#7861be',
    500: '#2b23a1',
    950: '#000000',
  },
}

SCSS

$custom: #2b23a1;
$custom-light: #7861be;
$custom-dark: #000000;

JSON

{
  "hex": "#2b23a1",
  "rgb": {
    "r": 43,
    "g": 35,
    "b": 161
  },
  "hsl": {
    "h": 243.81,
    "s": 64.286,
    "l": 38.431
  },
  "oklch": {
    "l": 0.36933,
    "c": 0.191,
    "h": 274.5
  },
  "luminance": 0.04289
}

Semantic roles & 50–950 ramp

primary

#2B23A1

secondary

#BCC25E

accent

#E741DD

background

#F8F5FB

surface

#EFEAF7

border

#CAC6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #2B23A1

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

Preview Lab → · Contrast checker → · Palette generator →