#3C399A
Closest named color: Blueberry (#464196). oklch(40.9% 0.153 278.5), rgb(60, 57, 154).
Aa
White text reads best on this color (9.35:1).
About this color
#3C399A is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.153 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.028 away. White text reads best on it, at 9.35:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.24:1 |
| White text | 9.35:1 |
Values
| HEX | #3C399A |
| RGB | rgb(60, 57, 154) |
| HSL | hsl(242, 46%, 41%) |
| OKLCH | oklch(40.9% 0.153 278.5) |
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 #3C399A | 9.35:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #3C399A | 2.24:1 | Fails | Lc 12.8 | Not readable |
| #3C399A text on white | 9.35:1 | AAA | Lc 91.2 | Preferred for body text |
| #3C399A text on black | 2.24:1 | Fails | Lc -11.2 | 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
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#D1D7FA
oklch(88.6% 0.049 277.7)
-
Step 300
300
#B3BBFA
oklch(80.8% 0.089 278.6)
-
Step 400
400
#8D95F8
oklch(70.6% 0.144 278.5)
-
Step 500
500
#7478F5
oklch(63.2% 0.183 278.4)
-
Step 600
600
#5F5CE4
oklch(55.6% 0.2 278.6)
-
Step 700
700
#4F4BC6
oklch(49.1% 0.186 278.5)
-
Step 800
800 (this color)
#3C399A
oklch(40.9% 0.153 278.5)
-
Step 900
900
#36367F
oklch(37.6% 0.12 278.9)
-
Step 950
950
#1F214A
oklch(27.1% 0.075 278.1)
#3C399A 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) | #004A9D | 0.059 |
| Deuteranopia (no green cones) | #004398 | 0.054 |
| Tritanopia (no blue cones) | #005164 | 0.130 |
| Achromatopsia (no color) | #474747 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C399A
#3C399A
oklch(40.9% 0.153 278.5)
- #564A00
#564A00
oklch(40.9% 0.085 98.6)
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 #3C399A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.028
- Dark Slate Blue #483D8B ΔE 0.034
- Sapphire #2138AB ΔE 0.044
- Cobalt #1E488F ΔE 0.052
- Indigo Blue #3A18B1 ΔE 0.065
- Imperial Purple #480CA8 ΔE 0.070
- Rebecca Purple #663399 ΔE 0.075
- Dusk Blue #26538D ΔE 0.075
Use #3C399A 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.