#4A2578
Closest named color: Indigo (#4B0082). oklch(36.1% 0.135 300.1), rgb(74, 37, 120).
Aa
White text reads best on this color (11.49:1).
About this color
#4A2578 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.135 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.050 away. White text reads best on it, at 11.49:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.135) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.82:1 |
| White text | 11.49:1 |
Values
| HEX | #4A2578 |
| RGB | rgb(74, 37, 120) |
| HSL | hsl(267, 53%, 31%) |
| OKLCH | oklch(36.1% 0.135 300.1) |
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 #4A2578 | 11.49:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #4A2578 | 1.82:1 | Fails | Lc 7.9 | Not readable |
| #4A2578 text on white | 11.49:1 | AAA | Lc 95.9 | Preferred for body text |
| #4A2578 text on black | 1.82:1 | Fails | Lc 0.0 | 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
#F7F4FD
oklch(97.2% 0.012 301.3)
-
Step 100
100
#EDE6FB
oklch(93.7% 0.029 301)
-
Step 200
200
#DED1FA
oklch(88.4% 0.057 299.7)
-
Step 300
300
#CBB2F9
oklch(81% 0.102 300.3)
-
Step 400
400
#B186F5
oklch(70.7% 0.162 300.2)
-
Step 500
500
#9F62F1
oklch(63% 0.207 300.2)
-
Step 600
600
#8B43E0
oklch(55.7% 0.225 300)
-
Step 700
700
#7632C2
oklch(49% 0.209 300.1)
-
Step 800
800
#602C9D
oklch(42.7% 0.173 300.1)
-
Step 900
900 (this color)
#4A2578
oklch(36.1% 0.135 300.1)
-
Step 950
950
#2E1A49
oklch(27.1% 0.085 300.5)
#4A2578 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) | #00397B | 0.097 |
| Deuteranopia (no green cones) | #003976 | 0.098 |
| Tritanopia (no blue cones) | #40384B | 0.101 |
| Achromatopsia (no color) | #393939 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4A2578
#4A2578
oklch(36.1% 0.135 300.1)
- #384300
#384300
oklch(36% 0.085 119.7)
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 #4A2578, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.050
- Royal Purple #4B006E ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.063
- Blueberry #464196 ΔE 0.080
- Grape Purple #5D1451 ΔE 0.082
- Rebecca Purple #663399 ΔE 0.083
- Imperial Purple #480CA8 ΔE 0.085
- Plum Purple #4E0550 ΔE 0.086
Use #4A2578 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.