#3C3B9B
Closest named color: Blueberry (#464196). oklch(41.3% 0.152 277.9), rgb(60, 59, 155).
Aa
White text reads best on this color (9.16:1).
About this color
#3C3B9B is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.152 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.025 away. White text reads best on it, at 9.16:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.29:1 |
| White text | 9.16:1 |
Values
| HEX | #3C3B9B |
| RGB | rgb(60, 59, 155) |
| HSL | hsl(241, 45%, 42%) |
| OKLCH | oklch(41.3% 0.152 277.9) |
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 #3C3B9B | 9.16:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #3C3B9B | 2.29:1 | Fails | Lc 13.3 | Not readable |
| #3C3B9B text on white | 9.16:1 | AAA | Lc 90.7 | Preferred for body text |
| #3C3B9B text on black | 2.29:1 | Fails | Lc -11.6 | 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 800.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#D1D7FA
oklch(88.6% 0.049 277.7)
-
Step 300
300
#B3BCFA
oklch(81% 0.088 277.8)
-
Step 400
400
#8C96F8
oklch(70.7% 0.143 277.7)
-
Step 500
500
#7378F4
oklch(63.1% 0.182 278.1)
-
Step 600
600
#5D5DE3
oklch(55.5% 0.198 277.8)
-
Step 700
700
#4E4CC5
oklch(49.2% 0.183 278)
-
Step 800
800 (this color)
#3C3B9B
oklch(41.3% 0.152 277.9)
-
Step 900
900
#35377F
oklch(37.8% 0.119 277.8)
-
Step 950
950
#1F214A
oklch(27.1% 0.075 278.1)
#3C3B9B 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) | #004C9E | 0.058 |
| Deuteranopia (no green cones) | #004499 | 0.052 |
| Tritanopia (no blue cones) | #005365 | 0.130 |
| Achromatopsia (no color) | #484848 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C3B9B
#3C3B9B
oklch(41.3% 0.152 277.9)
- #584B00
#584B00
oklch(41.3% 0.085 97.7)
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 #3C3B9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.025
- Dark Slate Blue #483D8B ΔE 0.034
- Sapphire #2138AB ΔE 0.044
- Cobalt #1E488F ΔE 0.050
- Indigo Blue #3A18B1 ΔE 0.068
- Dusk Blue #26538D ΔE 0.072
- Imperial Purple #480CA8 ΔE 0.073
- Majorelle Blue #3F37C9 ΔE 0.074
Use #3C3B9B 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.