#2F2D71
Closest named color: Marine Blue (#01386A). oklch(34.1% 0.114 279.8), rgb(47, 45, 113).
Aa
White text reads best on this color (12.10:1).
About this color
#2F2D71 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.114 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.053 away. White text reads best on it, at 12.10:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.73:1 |
| White text | 12.10:1 |
Values
| HEX | #2F2D71 |
| RGB | rgb(47, 45, 113) |
| HSL | hsl(242, 43%, 31%) |
| OKLCH | oklch(34.1% 0.114 279.8) |
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 #2F2D71 | 12.10:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #2F2D71 | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #2F2D71 text on white | 12.10:1 | AAA | Lc 97.4 | Preferred for body text |
| #2F2D71 text on black | 1.73:1 | Fails | Lc 0.0 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E8FB
oklch(93.5% 0.026 281.1)
-
Step 200
200
#D2D6F9
oklch(88.4% 0.048 280.2)
-
Step 300
300
#B5BBF8
oklch(80.9% 0.086 279.9)
-
Step 400
400
#9096F4
oklch(70.8% 0.137 279.5)
-
Step 500
500
#7778F0
oklch(63.1% 0.176 279.7)
-
Step 600
600
#625EDE
oklch(55.7% 0.19 279.7)
-
Step 700
700
#524CC1
oklch(49.1% 0.177 279.9)
-
Step 800
800
#433F9C
oklch(42.7% 0.147 280.1)
-
Step 900
900 (this color)
#2F2D71
oklch(34.1% 0.114 279.8)
-
Step 950
950
#202149
oklch(27.1% 0.073 279.3)
#2F2D71 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) | #003973 | 0.050 |
| Deuteranopia (no green cones) | #003370 | 0.047 |
| Tritanopia (no blue cones) | #0D3D4A | 0.099 |
| Achromatopsia (no color) | #363636 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F2D71
#2F2D71
oklch(34.1% 0.114 279.8)
- #413900
#413900
oklch(34.2% 0.071 100.6)
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 #2F2D71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.053
- Marine #042E60 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.059
- Midnight Blue #191970 ΔE 0.063
- Twilight Blue #0A437A ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.075
- Cobalt #1E488F ΔE 0.084
- Space Cadet #2B2D42 ΔE 0.084
Use #2F2D71 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.