#4B308F
Closest named color: Dark Slate Blue (#483D8B). oklch(39.8% 0.149 291.2), rgb(75, 48, 143).
Aa
White text reads best on this color (9.91:1).
About this color
#4B308F is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.149 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.032 away. White text reads best on it, at 9.91:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.11:1 |
| White text | 9.91:1 |
Values
| HEX | #4B308F |
| RGB | rgb(75, 48, 143) |
| HSL | hsl(257, 50%, 37%) |
| OKLCH | oklch(39.8% 0.149 291.2) |
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 #4B308F | 9.91:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #4B308F | 2.11:1 | Fails | Lc 11.4 | Not readable |
| #4B308F text on white | 9.91:1 | AAA | Lc 92.5 | Preferred for body text |
| #4B308F text on black | 2.11:1 | Fails | Lc -9.9 | 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
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E9E7FE
oklch(93.6% 0.031 289.8)
-
Step 200
200
#D9D3FF
oklch(88.6% 0.06 291.4)
-
Step 300
300
#C1B5FF
oklch(81% 0.104 291.3)
-
Step 400
400
#A38AFF
oklch(70.7% 0.167 291.4)
-
Step 500
500
#8F66FF
oklch(63% 0.217 291.2)
-
Step 600
600
#7C41F5
oklch(55.6% 0.248 291)
-
Step 700
700
#6930D5
oklch(49% 0.23 291)
-
Step 800
800
#562BAC
oklch(42.8% 0.19 291.4)
-
Step 900
900 (this color)
#4B308F
oklch(39.8% 0.149 291.2)
-
Step 950
950
#281A50
oklch(27% 0.094 290.6)
#4B308F 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) | #004492 | 0.086 |
| Deuteranopia (no green cones) | #00418D | 0.085 |
| Tritanopia (no blue cones) | #36475B | 0.120 |
| Achromatopsia (no color) | #434343 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B308F
#4B308F
oklch(39.8% 0.149 291.2)
- #494B00
#494B00
oklch(39.8% 0.088 111.5)
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 #4B308F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.032
- Blueberry #464196 ΔE 0.041
- Rebecca Purple #663399 ΔE 0.055
- Imperial Purple #480CA8 ΔE 0.063
- Chrysanthemum #560BAD ΔE 0.067
- Indigo #4B0082 ΔE 0.073
- Indigo Blue #3A18B1 ΔE 0.076
- Sapphire #2138AB ΔE 0.077
Use #4B308F 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.