#2F3858
Closest named color: Prussian Blue (#1D3557). oklch(34.8% 0.057 271.2), rgb(47, 56, 88).
Aa
White text reads best on this color (11.49:1).
About this color
#2F3858 is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.057 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.027 away. White text reads best on it, at 11.49:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.82:1 |
| White text | 11.49:1 |
Values
| HEX | #2F3858 |
| RGB | rgb(47, 56, 88) |
| HSL | hsl(227, 30%, 26%) |
| OKLCH | oklch(34.8% 0.057 271.2) |
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 #2F3858 | 11.49:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #2F3858 | 1.82:1 | Fails | Lc 7.5 | Not readable |
| #2F3858 text on white | 11.49:1 | AAA | Lc 96.4 | Preferred for body text |
| #2F3858 text on black | 1.82:1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF2
oklch(93.7% 0.011 269.5)
-
Step 200
200
#D3D9EA
oklch(88.6% 0.024 270.3)
-
Step 300
300
#B6C0DD
oklch(80.9% 0.042 270.4)
-
Step 400
400
#919FCC
oklch(70.8% 0.068 271.2)
-
Step 500
500
#7686BF
oklch(63% 0.088 271.7)
-
Step 600
600
#5F6FAC
oklch(55.5% 0.097 271.8)
-
Step 700
700
#4E5D93
oklch(49% 0.089 271.1)
-
Step 800
800
#404C77
oklch(42.6% 0.073 271.2)
-
Step 900
900 (this color)
#2F3858
oklch(34.8% 0.057 271.2)
-
Step 950
950
#202538
oklch(26.9% 0.036 272.4)
#2F3858 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) | #2D3B59 | 0.009 |
| Deuteranopia (no green cones) | #293857 | 0.009 |
| Tritanopia (no blue cones) | #213F44 | 0.052 |
| Achromatopsia (no color) | #393939 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F3858
#2F3858
oklch(34.8% 0.057 271.2)
- #453912
#453912
oklch(34.9% 0.058 91.9)
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 #2F3858, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.027
- Dark Blue Grey #1F3B4D ΔE 0.032
- Gunmetal #293241 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.044
- Onyx #343A40 ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.048
- Midnight Green #073B4C ΔE 0.049
- Charcoal #264653 ΔE 0.049
Use #2F3858 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.