#2A23B1#2A23B1

#2A23B1 is a dark, highly saturated blue. Relative luminance 0.049; OKLCH L 38.7% C 0.210 H 272.7°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#2A23B1
RGB	rgb(42, 35, 177)
HSL	hsl(243, 67%, 42%)
HSV	hsv(243, 80%, 69%)
CMYK	cmyk(76.3%, 80.2%, 0%, 30.6%)
CIE-LAB	lab(26.35, 49.39, -72.59)
CIE-LCH	lch(26.35, 87.80, 304.23°)
OKLab	oklab(38.67% 0.0099 -0.2101)
OKLCH	oklch(38.67% 0.21 272.7)
XYZ	xyz(9.4890, 4.8676, 42.0259)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A23B1 #AAB123

analogous

#2363B1 #2A23B1 #7123B1

triadic

#2A23B1 #B12A23 #23B12A

tetradic

#2A23B1 #B12363 #AAB123 #23B171

square

#2A23B1 #B12363 #AAB123 #23B171

split-complementary

#2A23B1 #B17123 #63B123

monochromatic

#120F4B #1E197E #2A23B1 #4139D8 #726CE2

Accessibility & contrast

On white

10.64

#2A23B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#2A23B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A23B1

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A23B1	#FFFFFF	#000000	##FFFFFF
##2A23B1	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045B5

Deuteranopia (green-blind)

#0037AF

Tritanopia (blue-blind)

#004F6A

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #2a23b1;
/* rgb */ color: rgb(42, 35, 177);
/* oklch */ color: oklch(38.7% 0.210 272.7);

Tailwind

colors: {
  custom: {
    50: '#7b62ca',
    500: '#2a23b1',
    950: '#000000',
  },
}

SCSS

$custom: #2a23b1;
$custom-light: #7b62ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2a23b1",
  "rgb": {
    "r": 42,
    "g": 35,
    "b": 177
  },
  "hsl": {
    "h": 242.958,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.38672,
    "c": 0.21029,
    "h": 272.7
  },
  "luminance": 0.04869
}

Semantic roles & 50–950 ramp

primary

#2A23B1

secondary

#C3C868

accent

#EA3EE1

background

#F8F5FC

surface

#EFEAF9

border

#CAC6D2

text

#0B0513

muted

#7C7982

Preview Lab

Preview with #2A23B1

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

Preview Lab → · Contrast checker → · Palette generator →