#2A17B3#2A17B3

#2A17B3 is a dark, highly saturated blue. Relative luminance 0.044; OKLCH L 37.7% C 0.221 H 273.3°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#2A17B3
RGB	rgb(42, 23, 179)
HSL	hsl(247, 77%, 40%)
HSV	hsv(247, 87%, 70%)
CMYK	cmyk(76.5%, 87.2%, 0%, 29.8%)
CIE-LAB	lab(24.82, 55.22, -76.33)
CIE-LCH	lch(24.82, 94.21, 305.88°)
OKLab	oklab(37.69% 0.0125 -0.2207)
OKLCH	oklch(37.69% 0.221 273.3)
XYZ	xyz(9.3952, 4.3587, 42.9852)
Luminance	0.0436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A17B3 #A0B317

analogous

#1752B3 #2A17B3 #7817B3

triadic

#2A17B3 #B32A17 #17B32A

tetradic

#2A17B3 #B31752 #A0B317 #17B378

square

#2A17B3 #B31752 #A0B317 #17B378

split-complementary

#2A17B3 #B37817 #52B317

monochromatic

#110947 #1D107D #2A17B3 #3C24E3 #6C5BEA

Accessibility & contrast

On white

11.22

#2A17B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#2A17B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2A17B3

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A17B3	#FFFFFF	#000000	##FFFFFF
##2A17B3	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042B7

Deuteranopia (green-blind)

#0033B0

Tritanopia (blue-blind)

#004C6A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #2a17b3;
/* rgb */ color: rgb(42, 23, 179);
/* oklch */ color: oklch(37.7% 0.221 273.3);

Tailwind

colors: {
  custom: {
    50: '#7d5ccb',
    500: '#2a17b3',
    950: '#000000',
  },
}

SCSS

$custom: #2a17b3;
$custom-light: #7d5ccb;
$custom-dark: #000000;

JSON

{
  "hex": "#2a17b3",
  "rgb": {
    "r": 42,
    "g": 23,
    "b": 179
  },
  "hsl": {
    "h": 247.308,
    "s": 77.228,
    "l": 39.608
  },
  "oklch": {
    "l": 0.37687,
    "c": 0.22102,
    "h": 273.3
  },
  "luminance": 0.0436
}

Semantic roles & 50–950 ramp

primary

#2A17B3

secondary

#BFCD58

accent

#F434DC

background

#F8F5FC

surface

#F0E9F9

border

#CBC5D2

text

#0C0414

muted

#7D7982

Preview Lab

Preview with #2A17B3

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

Preview Lab → · Contrast checker → · Palette generator →