#39396B
Closest named color: Twilight Blue (#0A437A). oklch(37% 0.084 281.5), rgb(57, 57, 107).
Aa
White text reads best on this color (10.65:1).
About this color
#39396B is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.084 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.054 away. White text reads best on it, at 10.65:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.97:1 |
| White text | 10.65:1 |
Values
| HEX | #39396B |
| RGB | rgb(57, 57, 107) |
| HSL | hsl(240, 30%, 32%) |
| OKLCH | oklch(37% 0.084 281.5) |
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 #39396B | 10.65:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #39396B | 1.97:1 | Fails | Lc 9.3 | Not readable |
| #39396B text on white | 10.65:1 | AAA | Lc 94.6 | Preferred for body text |
| #39396B text on black | 1.97:1 | Fails | Lc -8.0 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F6
oklch(93.6% 0.018 279.1)
-
Step 200
200
#D5D7F1
oklch(88.6% 0.036 282.1)
-
Step 300
300
#B9BCE9
oklch(80.8% 0.063 281.9)
-
Step 400
400
#9699DF
oklch(70.8% 0.102 281.6)
-
Step 500
500
#7D7ED5
oklch(63% 0.129 281.5)
-
Step 600
600
#6766C3
oklch(55.6% 0.141 281.3)
-
Step 700
700
#5654A8
oklch(49.1% 0.131 281.5)
-
Step 800
800
#464588
oklch(42.6% 0.109 281.4)
-
Step 900
900 (this color)
#39396B
oklch(37% 0.084 281.5)
-
Step 950
950
#222340
oklch(27.1% 0.053 280.7)
#39396B 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) | #26406D | 0.031 |
| Deuteranopia (no green cones) | #233D6A | 0.031 |
| Tritanopia (no blue cones) | #29434C | 0.073 |
| Achromatopsia (no color) | #3E3E3E | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39396B
#39396B
oklch(37% 0.084 281.5)
- #494100
#494100
oklch(37.2% 0.078 101.5)
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 #39396B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.057
- Marine Blue #01386A ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.060
- Dark Blue Grey #1F3B4D ΔE 0.068
- Charcoal #264653 ΔE 0.070
- Cobalt #1E488F ΔE 0.072
Use #39396B 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.