#4C2580
Closest named color: Indigo (#4B0082). oklch(37% 0.145 298.7), rgb(76, 37, 128).
Aa
White text reads best on this color (11.14:1).
About this color
#4C2580 is a dark, vivid purple. In OKLCH its lightness is 37%, its chroma 0.145 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.047 away. White text reads best on it, at 11.14:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.88:1 |
| White text | 11.14:1 |
Values
| HEX | #4C2580 |
| RGB | rgb(76, 37, 128) |
| HSL | hsl(266, 55%, 32%) |
| OKLCH | oklch(37% 0.145 298.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #4C2580 | 11.14:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #4C2580 | 1.88:1 | Fails | Lc 8.7 | Not readable |
| #4C2580 text on white | 11.14:1 | AAA | Lc 95.2 | Preferred for body text |
| #4C2580 text on black | 1.88:1 | Fails | Lc -7.5 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#ECE6FD
oklch(93.6% 0.031 297.7)
-
Step 200
200
#DED1FC
oklch(88.5% 0.06 299)
-
Step 300
300
#CAB1FE
oklch(80.9% 0.11 298.8)
-
Step 400
400
#B084FD
oklch(70.7% 0.175 298.6)
-
Step 500
500
#9E5EFA
oklch(63% 0.223 298.7)
-
Step 600
600
#8A3CE9
oklch(55.5% 0.242 298.6)
-
Step 700
700
#762CCB
oklch(49.2% 0.225 298.7)
-
Step 800
800
#6027A4
oklch(42.7% 0.186 298.9)
-
Step 900
900 (this color)
#4C2580
oklch(37% 0.145 298.7)
-
Step 950
950
#2D184C
oklch(26.9% 0.092 298.6)
#4C2580 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #003B83 | 0.098 |
| Deuteranopia (no green cones) | #003A7E | 0.099 |
| Tritanopia (no blue cones) | #403B4F | 0.111 |
| Achromatopsia (no color) | #3B3B3B | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C2580
#4C2580
oklch(37% 0.145 298.7)
- #3B4600
#3B4600
oklch(37.1% 0.088 119.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #4C2580, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.057
- Royal Purple #4B006E ΔE 0.061
- Blueberry #464196 ΔE 0.072
- Imperial Purple #480CA8 ΔE 0.073
- Rebecca Purple #663399 ΔE 0.073
- Chrysanthemum #560BAD ΔE 0.078
- Indigo Blue #3A18B1 ΔE 0.092
Use #4C2580 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.