#4B3870
Closest named color: Dark Slate Blue (#483D8B). oklch(38.9% 0.094 297.5), rgb(75, 56, 112).
Aa
White text reads best on this color (10.00:1).
About this color
#4B3870 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.094 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.046 away. White text reads best on it, at 10.00:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #4B3870 |
| RGB | rgb(75, 56, 112) |
| HSL | hsl(260, 33%, 33%) |
| OKLCH | oklch(38.9% 0.094 297.5) |
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 #4B3870 | 10.00:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #4B3870 | 2.09:1 | Fails | Lc 10.9 | Not readable |
| #4B3870 text on white | 10.00:1 | AAA | Lc 93.1 | Preferred for body text |
| #4B3870 text on black | 2.09:1 | Fails | Lc -9.4 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EBE7F6
oklch(93.5% 0.021 298.2)
-
Step 200
200
#DCD4F0
oklch(88.5% 0.039 298.7)
-
Step 300
300
#C5B8E9
oklch(81% 0.07 297)
-
Step 400
400
#A991DE
oklch(70.7% 0.113 297.8)
-
Step 500
500
#9474D4
oklch(63.1% 0.143 297.5)
-
Step 600
600
#7F5AC2
oklch(55.5% 0.157 297.5)
-
Step 700
700
#6C4AA7
oklch(49.2% 0.144 297.7)
-
Step 800
800
#583D87
oklch(42.7% 0.12 298)
-
Step 900
900 (this color)
#4B3870
oklch(38.9% 0.094 297.5)
-
Step 950
950
#2A1F3F
oklch(26.9% 0.059 298.2)
#4B3870 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) | #264272 | 0.059 |
| Deuteranopia (no green cones) | #2A426F | 0.055 |
| Tritanopia (no blue cones) | #43424E | 0.074 |
| Achromatopsia (no color) | #424242 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B3870
#4B3870
oklch(38.9% 0.094 297.5)
- #414B00
#414B00
oklch(39% 0.091 118.1)
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 #4B3870, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.046
- Blueberry #464196 ΔE 0.065
- Twilight #4E518B ΔE 0.076
- Dark Grey Blue #29465B ΔE 0.078
- Twilight Blue #0A437A ΔE 0.079
- Dusk #4E5481 ΔE 0.080
- Cobalt #1E488F ΔE 0.081
- Rebecca Purple #663399 ΔE 0.085
Use #4B3870 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.