#4A2F87
Closest named color: Dark Slate Blue (#483D8B). oklch(38.9% 0.14 292.9), rgb(74, 47, 135).
Aa
White text reads best on this color (10.25:1).
About this color
#4A2F87 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.140 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.034 away. White text reads best on it, at 10.25:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.140) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.04:1 |
| White text | 10.25:1 |
Values
| HEX | #4A2F87 |
| RGB | rgb(74, 47, 135) |
| HSL | hsl(258, 48%, 36%) |
| OKLCH | oklch(38.9% 0.14 292.9) |
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 #4A2F87 | 10.25:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #4A2F87 | 2.04:1 | Fails | Lc 10.6 | Not readable |
| #4A2F87 text on white | 10.25:1 | AAA | Lc 93.4 | Preferred for body text |
| #4A2F87 text on black | 2.04:1 | Fails | Lc -9.1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#EAE7FD
oklch(93.7% 0.03 292.1)
-
Step 200
200
#DAD3FD
oklch(88.6% 0.058 292.8)
-
Step 300
300
#C3B4FF
oklch(80.9% 0.105 293.1)
-
Step 400
400
#A689FE
oklch(70.7% 0.167 293)
-
Step 500
500
#9266FD
oklch(63.2% 0.215 292.6)
-
Step 600
600
#7E46EC
oklch(55.6% 0.233 292.6)
-
Step 700
700
#6B35CD
oklch(49.1% 0.217 292.8)
-
Step 800
800
#572EA6
oklch(42.7% 0.18 292.8)
-
Step 900
900 (this color)
#4A2F87
oklch(38.9% 0.14 292.9)
-
Step 950
950
#291B4D
oklch(27% 0.088 292.4)
#4A2F87 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) | #00428A | 0.086 |
| Deuteranopia (no green cones) | #003F85 | 0.086 |
| Tritanopia (no blue cones) | #394356 | 0.111 |
| Achromatopsia (no color) | #414141 | 0.141 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4A2F87
#4A2F87
oklch(38.9% 0.14 292.9)
- #454900
#454900
oklch(38.8% 0.087 113.3)
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 #4A2F87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Blueberry #464196 ΔE 0.048
- Rebecca Purple #663399 ΔE 0.062
- Indigo #4B0082 ΔE 0.068
- Imperial Purple #480CA8 ΔE 0.071
- Chrysanthemum #560BAD ΔE 0.076
- Cobalt #1E488F ΔE 0.080
- Indigo Blue #3A18B1 ΔE 0.085
Use #4A2F87 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.