#2F3073
Closest named color: Marine Blue (#01386A). oklch(34.9% 0.113 278.2), rgb(47, 48, 115).
Aa
White text reads best on this color (11.72:1).
About this color
#2F3073 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.113 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.050 away. White text reads best on it, at 11.72:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.79:1 |
| White text | 11.72:1 |
Values
| HEX | #2F3073 |
| RGB | rgb(47, 48, 115) |
| HSL | hsl(239, 42%, 32%) |
| OKLCH | oklch(34.9% 0.113 278.2) |
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 #2F3073 | 11.72:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #2F3073 | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #2F3073 text on white | 11.72:1 | AAA | Lc 96.6 | Preferred for body text |
| #2F3073 text on black | 1.79:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E6E9FB
oklch(93.7% 0.024 278.4)
-
Step 200
200
#D1D7F9
oklch(88.5% 0.047 277.5)
-
Step 300
300
#B3BCF7
oklch(80.9% 0.084 277.6)
-
Step 400
400
#8E97F3
oklch(70.8% 0.134 278.1)
-
Step 500
500
#747AEF
oklch(63.2% 0.172 278)
-
Step 600
600
#5F5FDD
oklch(55.5% 0.187 278.4)
-
Step 700
700
#4F4EC0
oklch(49.2% 0.174 278.3)
-
Step 800
800
#40409B
oklch(42.6% 0.145 278.3)
-
Step 900
900 (this color)
#2F3073
oklch(34.9% 0.113 278.2)
-
Step 950
950
#1F2148
oklch(26.9% 0.071 278.2)
#2F3073 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) | #013B75 | 0.047 |
| Deuteranopia (no green cones) | #003572 | 0.045 |
| Tritanopia (no blue cones) | #09404C | 0.099 |
| Achromatopsia (no color) | #383838 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3073
#2F3073
oklch(34.9% 0.113 278.2)
- #443A00
#443A00
oklch(34.8% 0.072 98.3)
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 #2F3073, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.050
- Twilight Blue #0A437A ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.059
- Marine #042E60 ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.068
- Midnight Blue #191970 ΔE 0.069
- Cobalt #1E488F ΔE 0.076
- Blueberry #464196 ΔE 0.083
Use #2F3073 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.