#2F3765
Closest named color: Prussian Blue (#1D3557). oklch(35.4% 0.08 274.1), rgb(47, 55, 101).
Aa
White text reads best on this color (11.31:1).
About this color
#2F3765 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.080 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.036 away. White text reads best on it, at 11.31:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.85:1 |
| White text | 11.31:1 |
Values
| HEX | #2F3765 |
| RGB | rgb(47, 55, 101) |
| HSL | hsl(231, 36%, 29%) |
| OKLCH | oklch(35.4% 0.08 274.1) |
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 #2F3765 | 11.31:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #2F3765 | 1.85:1 | Fails | Lc 7.9 | Not readable |
| #2F3765 text on white | 11.31:1 | AAA | Lc 96.0 | Preferred for body text |
| #2F3765 text on black | 1.85:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F0
oklch(88.5% 0.034 274.5)
-
Step 300
300
#B4BEE8
oklch(80.8% 0.06 274.5)
-
Step 400
400
#8E9CDD
oklch(70.7% 0.097 274.3)
-
Step 500
500
#7382D3
oklch(63% 0.123 274.4)
-
Step 600
600
#5C6BC1
oklch(55.7% 0.134 273.8)
-
Step 700
700
#4C58A6
oklch(49% 0.125 274.3)
-
Step 800
800
#3E4987
oklch(42.8% 0.103 273.7)
-
Step 900
900 (this color)
#2F3765
oklch(35.4% 0.08 274.1)
-
Step 950
950
#1F243F
oklch(27% 0.051 274.5)
#2F3765 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) | #243D67 | 0.021 |
| Deuteranopia (no green cones) | #1F3864 | 0.021 |
| Tritanopia (no blue cones) | #194149 | 0.071 |
| Achromatopsia (no color) | #3A3A3A | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3765
#2F3765
oklch(35.4% 0.08 274.1)
- #483A00
#483A00
oklch(35.3% 0.072 93.7)
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 #2F3765, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.036
- Marine Blue #01386A ΔE 0.043
- Twilight Blue #0A437A ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.054
- Marine #042E60 ΔE 0.058
- Charcoal #264653 ΔE 0.064
- Gunmetal #293241 ΔE 0.065
Use #2F3765 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.