#2F3868
Closest named color: Prussian Blue (#1D3557). oklch(35.8% 0.084 273.5), rgb(47, 56, 104).
Aa
White text reads best on this color (11.13:1).
About this color
#2F3868 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.084 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.040 away. White text reads best on it, at 11.13:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.88:1 |
| White text | 11.13:1 |
Values
| HEX | #2F3868 |
| RGB | rgb(47, 56, 104) |
| HSL | hsl(231, 38%, 30%) |
| OKLCH | oklch(35.8% 0.084 273.5) |
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 #2F3868 | 11.13:1 | AAA | Lc -99.4 | Preferred for body text |
| Black text on #2F3868 | 1.88:1 | Fails | Lc 8.3 | Not readable |
| #2F3868 text on white | 11.13:1 | AAA | Lc 95.6 | Preferred for body text |
| #2F3868 text on black | 1.88:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D1D8F1
oklch(88.5% 0.035 273.2)
-
Step 300
300
#B3BFEA
oklch(81% 0.062 272.7)
-
Step 400
400
#8C9CDF
oklch(70.6% 0.1 273.3)
-
Step 500
500
#7182D7
oklch(63.1% 0.129 273.6)
-
Step 600
600
#5A6AC4
oklch(55.6% 0.14 273.4)
-
Step 700
700
#4A58A9
oklch(49.1% 0.13 273.3)
-
Step 800
800
#3D4889
oklch(42.6% 0.108 273.7)
-
Step 900
900 (this color)
#2F3868
oklch(35.8% 0.084 273.5)
-
Step 950
950
#1E2440
oklch(27% 0.053 273.2)
#2F3868 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) | #243E6A | 0.021 |
| Deuteranopia (no green cones) | #1E3967 | 0.022 |
| Tritanopia (no blue cones) | #16424B | 0.073 |
| Achromatopsia (no color) | #3B3B3B | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3868
#2F3868
oklch(35.8% 0.084 273.5)
- #4A3B00
#4A3B00
oklch(35.8% 0.073 92.8)
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 #2F3868, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.040
- Marine Blue #01386A ΔE 0.043
- Twilight Blue #0A437A ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.056
- Marine #042E60 ΔE 0.060
- Charcoal #264653 ΔE 0.065
- Midnight Green #073B4C ΔE 0.068
Use #2F3868 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.