#2D2F51
Closest named color: Prussian Blue (#1D3557). oklch(32% 0.06 279.9), rgb(45, 47, 81).
Aa
White text reads best on this color (12.82:1).
About this color
#2D2F51 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.060 and its hue 280°. 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 12.82:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.63:1 |
| White text | 12.82:1 |
Values
| HEX | #2D2F51 |
| RGB | rgb(45, 47, 81) |
| HSL | hsl(237, 29%, 25%) |
| OKLCH | oklch(32% 0.06 279.9) |
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 #2D2F51 | 12.82:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #2D2F51 | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #2D2F51 text on white | 12.82:1 | AAA | Lc 98.9 | Preferred for body text |
| #2D2F51 text on black | 1.63:1 | 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 950.
-
Step 50
50
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F8
oklch(93.7% 0.02 279.9)
-
Step 200
200
#D3D7F4
oklch(88.5% 0.04 279.3)
-
Step 300
300
#B7BCEF
oklch(80.9% 0.072 280.3)
-
Step 400
400
#9398E6
oklch(70.7% 0.114 280.3)
-
Step 500
500
#797DDF
oklch(63.1% 0.145 279.6)
-
Step 600
600
#6464CD
oklch(55.7% 0.158 279.9)
-
Step 700
700
#5352B1
oklch(49.1% 0.147 280)
-
Step 800
800
#44448F
oklch(42.7% 0.121 280)
-
Step 900
900
#393A72
oklch(37.7% 0.094 280.1)
-
Step 950
950 (this color)
#2D2F51
oklch(32% 0.06 279.9)
#2D2F51 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) | #233352 | 0.018 |
| Deuteranopia (no green cones) | #213150 | 0.019 |
| Tritanopia (no blue cones) | #22363C | 0.053 |
| Achromatopsia (no color) | #323232 | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D2F51
#2D2F51
oklch(32% 0.06 279.9)
- #3A3308
#3A3308
oklch(31.9% 0.06 99.7)
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 #2D2F51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.027
- Space Cadet #2B2D42 ΔE 0.027
- Gunmetal #293241 ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.044
- Marine #042E60 ΔE 0.052
- Midnight Green #073B4C ΔE 0.055
- Onyx #343A40 ΔE 0.055
- Oxford Blue #1B263B ΔE 0.056
Use #2D2F51 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.