#4C2978
Closest named color: Dark Slate Blue (#483D8B). oklch(37% 0.13 300.6), rgb(76, 41, 120).
Aa
White text reads best on this color (11.07:1).
About this color
#4C2978 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.130 and its hue 301°. 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 11.07:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.130) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.89:1 |
| White text | 11.07:1 |
Values
| HEX | #4C2978 |
| RGB | rgb(76, 41, 120) |
| HSL | hsl(267, 49%, 32%) |
| OKLCH | oklch(37% 0.13 300.6) |
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 #4C2978 | 11.07:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #4C2978 | 1.89:1 | Fails | Lc 8.7 | Not readable |
| #4C2978 text on white | 11.07:1 | AAA | Lc 95.2 | Preferred for body text |
| #4C2978 text on black | 1.89:1 | Fails | Lc -7.5 | 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
#EDE6FA
oklch(93.6% 0.028 301.7)
-
Step 200
200
#DED2F8
oklch(88.5% 0.053 299.7)
-
Step 300
300
#CBB2F6
oklch(80.9% 0.098 301.1)
-
Step 400
400
#B187F2
oklch(70.7% 0.156 300.6)
-
Step 500
500
#9F64ED
oklch(63.1% 0.2 300.7)
-
Step 600
600
#8B46DB
oklch(55.6% 0.216 300.7)
-
Step 700
700
#7636BE
oklch(49.1% 0.201 300.6)
-
Step 800
800
#602E9A
oklch(42.7% 0.167 300.7)
-
Step 900
900 (this color)
#4C2978
oklch(37% 0.13 300.6)
-
Step 950
950
#2D1A48
oklch(26.9% 0.083 299.9)
#4C2978 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) | #003B7A | 0.097 |
| Deuteranopia (no green cones) | #093B76 | 0.094 |
| Tritanopia (no blue cones) | #433A4C | 0.097 |
| Achromatopsia (no color) | #3C3C3C | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C2978
#4C2978
oklch(37% 0.13 300.6)
- #394600
#394600
oklch(36.9% 0.089 120.9)
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 #4C2978, 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 0.059
- Royal Purple #4B006E ΔE 0.064
- Blueberry #464196 ΔE 0.073
- Rebecca Purple #663399 ΔE 0.077
- Grape Purple #5D1451 ΔE 0.082
- Imperial Purple #480CA8 ΔE 0.088
- Plum Purple #4E0550 ΔE 0.090
Use #4C2978 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.