#2B23C1#2B23C1

#2B23C1 is a dark, highly saturated blue. Relative luminance 0.056; OKLCH L 40.6% C 0.228 H 271.8°. Best body text is #FFFFFF at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#2B23C1
RGB	rgb(43, 35, 193)
HSL	hsl(243, 69%, 45%)
HSV	hsv(243, 82%, 76%)
CMYK	cmyk(77.7%, 81.9%, 0%, 24.3%)
CIE-LAB	lab(28.29, 54.38, -78.89)
CIE-LCH	lch(28.29, 95.82, 304.58°)
OKLab	oklab(40.57% 0.0073 -0.2283)
OKLCH	oklch(40.57% 0.228 271.8)
XYZ	xyz(11.2197, 5.5647, 50.9245)
Luminance	0.0557 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B23C1 #B9C123

analogous

#236AC1 #2B23C1 #7A23C1

triadic

#2B23C1 #C12B23 #23C12B

tetradic

#2B23C1 #C1236A #B9C123 #23C17A

square

#2B23C1 #C1236A #B9C123 #23C17A

split-complementary

#2B23C1 #C17A23 #6AC123

monochromatic

#141059 #1F1A8D #2B23C1 #4C44DD #7E78E6

Accessibility & contrast

On white

9.94

#2B23C1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#2B23C1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B23C1

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B23C1	#FFFFFF	#000000	##FFFFFF
##2B23C1	1.00	9.94	2.11	9.94
#FFFFFF	9.94	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AC5

Deuteranopia (green-blind)

#003BBE

Tritanopia (blue-blind)

#005674

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2b23c1;
/* rgb */ color: rgb(43, 35, 193);
/* oklch */ color: oklch(40.6% 0.228 271.8);

Tailwind

colors: {
  custom: {
    50: '#8063d5',
    500: '#2b23c1',
    950: '#000000',
  },
}

SCSS

$custom: #2b23c1;
$custom-light: #8063d5;
$custom-dark: #000000;

JSON

{
  "hex": "#2b23c1",
  "rgb": {
    "r": 43,
    "g": 35,
    "b": 193
  },
  "hsl": {
    "h": 243.038,
    "s": 69.298,
    "l": 44.706
  },
  "oklch": {
    "l": 0.40571,
    "c": 0.2284,
    "h": 271.8
  },
  "luminance": 0.05566
}

Semantic roles & 50–950 ramp

primary

#2B23C1

secondary

#C9CE72

accent

#EC3CE3

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0514

muted

#7D7A83

Preview Lab

Preview with #2B23C1

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

Preview Lab → · Contrast checker → · Palette generator →