#4F2978
Closest named color: Dark Slate Blue (#483D8B). oklch(37.3% 0.13 302.7), rgb(79, 41, 120).
Aa
White text reads best on this color (10.93:1).
About this color
#4F2978 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.130 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.055 away. White text reads best on it, at 10.93:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.130) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.92:1 |
| White text | 10.93:1 |
Values
| HEX | #4F2978 |
| RGB | rgb(79, 41, 120) |
| HSL | hsl(269, 49%, 32%) |
| OKLCH | oklch(37.3% 0.13 302.7) |
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 #4F2978 | 10.93:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #4F2978 | 1.92:1 | Fails | Lc 9.1 | Not readable |
| #4F2978 text on white | 10.93:1 | AAA | Lc 94.9 | Preferred for body text |
| #4F2978 text on black | 1.92:1 | Fails | Lc -7.8 | 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
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EDE6FA
oklch(93.6% 0.028 301.7)
-
Step 200
200
#E0D1F7
oklch(88.5% 0.054 303.2)
-
Step 300
300
#CDB2F5
oklch(81% 0.097 302.7)
-
Step 400
400
#B486F0
oklch(70.7% 0.156 302.6)
-
Step 500
500
#A263EB
oklch(63.1% 0.199 302.4)
-
Step 600
600
#8E44D9
oklch(55.6% 0.217 302.6)
-
Step 700
700
#7934BC
oklch(49.1% 0.201 302.7)
-
Step 800
800
#622D98
oklch(42.7% 0.166 302.5)
-
Step 900
900 (this color)
#4F2978
oklch(37.3% 0.13 302.7)
-
Step 950
950
#2F1A47
oklch(27.1% 0.082 302.8)
#4F2978 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) | #003C7A | 0.102 |
| Deuteranopia (no green cones) | #103C76 | 0.095 |
| Tritanopia (no blue cones) | #473A4C | 0.097 |
| Achromatopsia (no color) | #3D3D3D | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F2978
#4F2978
oklch(37.3% 0.13 302.7)
- #384800
#384800
oklch(37.4% 0.092 122.9)
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 #4F2978, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.055
- Indigo #4B0082 ΔE 0.060
- Royal Purple #4B006E ΔE 0.065
- Blueberry #464196 ΔE 0.073
- Rebecca Purple #663399 ΔE 0.073
- Grape Purple #5D1451 ΔE 0.079
- Imperial Purple #480CA8 ΔE 0.090
- Plum Purple #4E0550 ΔE 0.090
Use #4F2978 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.