#2A2F55
Closest named color: Prussian Blue (#1D3557). oklch(32% 0.068 276.2), rgb(42, 47, 85).
Aa
White text reads best on this color (12.83:1).
About this color
#2A2F55 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.068 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.023 away. White text reads best on it, at 12.83:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.63:1 |
| White text | 12.83:1 |
Values
| HEX | #2A2F55 |
| RGB | rgb(42, 47, 85) |
| HSL | hsl(233, 34%, 25%) |
| OKLCH | oklch(32% 0.068 276.2) |
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 #2A2F55 | 12.83:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #2A2F55 | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #2A2F55 text on white | 12.83:1 | AAA | Lc 98.9 | Preferred for body text |
| #2A2F55 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D1D7F7
oklch(88.5% 0.044 277.1)
-
Step 300
300
#B2BDF5
oklch(80.9% 0.08 275.8)
-
Step 400
400
#8C98F0
oklch(70.7% 0.129 276.7)
-
Step 500
500
#717CEA
oklch(63% 0.164 276.3)
-
Step 600
600
#5B63D9
oklch(55.7% 0.178 276.1)
-
Step 700
700
#4B51BC
oklch(49.1% 0.165 276)
-
Step 800
800
#3E4398
oklch(42.8% 0.137 276.4)
-
Step 900
900
#343979
oklch(37.6% 0.107 276.6)
-
Step 950
950 (this color)
#2A2F55
oklch(32% 0.068 276.2)
#2A2F55 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) | #213456 | 0.019 |
| Deuteranopia (no green cones) | #1D3054 | 0.019 |
| Tritanopia (no blue cones) | #1B373D | 0.061 |
| Achromatopsia (no color) | #323232 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A2F55
#2A2F55
oklch(32% 0.068 276.2)
- #3D3200
#3D3200
oklch(32% 0.066 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 #2A2F55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.023
- Space Cadet #2B2D42 ΔE 0.034
- Gunmetal #293241 ΔE 0.040
- Marine #042E60 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.046
- Marine Blue #01386A ΔE 0.052
- Midnight Green #073B4C ΔE 0.055
- Oxford Blue #1B263B ΔE 0.059
Use #2A2F55 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.