#2F365E
Closest named color: Prussian Blue (#1D3557). oklch(34.7% 0.07 274.6), rgb(47, 54, 94).
Aa
White text reads best on this color (11.60:1).
About this color
#2F365E is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.070 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.028 away. White text reads best on it, at 11.60:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.81:1 |
| White text | 11.60:1 |
Values
| HEX | #2F365E |
| RGB | rgb(47, 54, 94) |
| HSL | hsl(231, 33%, 28%) |
| OKLCH | oklch(34.7% 0.07 274.6) |
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 #2F365E | 11.60:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #2F365E | 1.81:1 | Fails | Lc 0.0 | Not readable |
| #2F365E text on white | 11.60:1 | AAA | Lc 96.6 | Preferred for body text |
| #2F365E text on black | 1.81:1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6E9F4
oklch(93.5% 0.015 273.8)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B6BFE3
oklch(81% 0.052 274.2)
-
Step 400
400
#919DD6
oklch(70.8% 0.085 274.9)
-
Step 500
500
#7684CB
oklch(63.2% 0.108 274.4)
-
Step 600
600
#5F6CB7
oklch(55.5% 0.117 274.5)
-
Step 700
700
#4F5A9E
oklch(49.1% 0.109 274.7)
-
Step 800
800
#414A80
oklch(42.8% 0.09 274.8)
-
Step 900
900 (this color)
#2F365E
oklch(34.7% 0.07 274.6)
-
Step 950
950
#20253C
oklch(27.1% 0.043 273.8)
#2F365E 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) | #273B60 | 0.017 |
| Deuteranopia (no green cones) | #23375D | 0.017 |
| Tritanopia (no blue cones) | #1E3E45 | 0.062 |
| Achromatopsia (no color) | #393939 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F365E
#2F365E
oklch(34.7% 0.07 274.6)
- #453901
#453901
oklch(34.7% 0.071 95.6)
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 #2F365E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.028
- Dark Blue Grey #1F3B4D ΔE 0.044
- Marine Blue #01386A ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.052
- Gunmetal #293241 ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.053
- Marine #042E60 ΔE 0.056
- Midnight Green #073B4C ΔE 0.057
Use #2F365E 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.