#3A3277
Closest named color: Dark Slate Blue (#483D8B). oklch(36.6% 0.114 284.5), rgb(58, 50, 119).
Aa
White text reads best on this color (11.03:1).
About this color
#3A3277 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.114 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.050 away. White text reads best on it, at 11.03:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.90:1 |
| White text | 11.03:1 |
Values
| HEX | #3A3277 |
| RGB | rgb(58, 50, 119) |
| HSL | hsl(247, 41%, 33%) |
| OKLCH | oklch(36.6% 0.114 284.5) |
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 #3A3277 | 11.03:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #3A3277 | 1.90:1 | Fails | Lc 8.6 | Not readable |
| #3A3277 text on white | 11.03:1 | AAA | Lc 95.3 | Preferred for body text |
| #3A3277 text on black | 1.90:1 | Fails | Lc -7.4 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E7E8FA
oklch(93.6% 0.024 283.4)
-
Step 200
200
#D5D6F8
oklch(88.6% 0.047 284.1)
-
Step 300
300
#BABAF6
oklch(81% 0.084 284.4)
-
Step 400
400
#9893F2
oklch(70.7% 0.137 284.7)
-
Step 500
500
#8175ED
oklch(63.1% 0.174 284.8)
-
Step 600
600
#6C5ADB
oklch(55.5% 0.189 284.8)
-
Step 700
700
#5A49BE
oklch(49% 0.176 284.5)
-
Step 800
800
#4A3D9A
oklch(42.8% 0.146 284.8)
-
Step 900
900 (this color)
#3A3277
oklch(36.6% 0.114 284.5)
-
Step 950
950
#232048
oklch(27% 0.072 283.9)
#3A3277 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) | #073E79 | 0.058 |
| Deuteranopia (no green cones) | #033A76 | 0.059 |
| Tritanopia (no blue cones) | #24414F | 0.095 |
| Achromatopsia (no color) | #3C3C3C | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A3277
#3A3277
oklch(36.6% 0.114 284.5)
- #454000
#454000
oklch(36.5% 0.077 104.6)
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 #3A3277, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.050
- Twilight Blue #0A437A ΔE 0.063
- Marine Blue #01386A ΔE 0.066
- Blueberry #464196 ΔE 0.067
- Cobalt #1E488F ΔE 0.071
- Prussian Blue #1D3557 ΔE 0.073
- Marine #042E60 ΔE 0.080
- Indigo #4B0082 ΔE 0.083
Use #3A3277 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.