#3B3A77
Closest named color: Dark Slate Blue (#483D8B). oklch(38.3% 0.101 281.2), rgb(59, 58, 119).
Aa
White text reads best on this color (10.20:1).
About this color
#3B3A77 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.101 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.041 away. White text reads best on it, at 10.20:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.05:1 |
| White text | 10.20:1 |
Values
| HEX | #3B3A77 |
| RGB | rgb(59, 58, 119) |
| HSL | hsl(241, 34%, 35%) |
| OKLCH | oklch(38.3% 0.101 281.2) |
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 #3B3A77 | 10.20:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #3B3A77 | 2.05:1 | Fails | Lc 10.4 | Not readable |
| #3B3A77 text on white | 10.20:1 | AAA | Lc 93.5 | Preferred for body text |
| #3B3A77 text on black | 2.05:1 | Fails | Lc -9.0 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E8F9
oklch(93.5% 0.023 283.3)
-
Step 200
200
#D4D7F5
oklch(88.6% 0.041 281)
-
Step 300
300
#B7BBF1
oklch(80.8% 0.076 281.2)
-
Step 400
400
#9497EA
oklch(70.7% 0.121 281.3)
-
Step 500
500
#7B7BE4
oklch(63.2% 0.155 281)
-
Step 600
600
#6661D2
oklch(55.6% 0.169 281.4)
-
Step 700
700
#5550B6
oklch(49.2% 0.156 281.2)
-
Step 800
800
#454293
oklch(42.7% 0.129 281.1)
-
Step 900
900 (this color)
#3B3A77
oklch(38.3% 0.101 281.2)
-
Step 950
950
#222245
oklch(27.2% 0.064 281.3)
#3B3A77 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) | #1F4379 | 0.040 |
| Deuteranopia (no green cones) | #1A3F76 | 0.042 |
| Tritanopia (no blue cones) | #254753 | 0.087 |
| Achromatopsia (no color) | #414141 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B3A77
#3B3A77
oklch(38.3% 0.101 281.2)
- #4C4400
#4C4400
oklch(38.3% 0.08 101.8)
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 #3B3A77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.041
- Twilight Blue #0A437A ΔE 0.052
- Blueberry #464196 ΔE 0.057
- Cobalt #1E488F ΔE 0.058
- Marine Blue #01386A ΔE 0.066
- Light Navy #155084 ΔE 0.069
- Dark Grey Blue #29465B ΔE 0.071
- Prussian Blue #1D3557 ΔE 0.073
Use #3B3A77 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.