#2B2757
Closest named color: Prussian Blue (#1D3557). oklch(30.5% 0.084 284), rgb(43, 39, 87).
Aa
White text reads best on this color (13.72:1).
About this color
#2B2757 is a dark, moderately saturated purple. In OKLCH its lightness is 30%, its chroma 0.084 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.045 away. White text reads best on it, at 13.72:1.
| Hue family | Purples |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.53:1 |
| White text | 13.72:1 |
Values
| HEX | #2B2757 |
| RGB | rgb(43, 39, 87) |
| HSL | hsl(245, 38%, 25%) |
| OKLCH | oklch(30.5% 0.084 284) |
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 #2B2757 | 13.72:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #2B2757 | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #2B2757 text on white | 13.72:1 | AAA | Lc 100.1 | Preferred for body text |
| #2B2757 text on black | 1.53:1 | 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E7E8FD
oklch(93.7% 0.028 283.7)
-
Step 200
200
#D4D5FD
oklch(88.5% 0.055 284.1)
-
Step 300
300
#B8B8FF
oklch(80.8% 0.1 283.9)
-
Step 400
400
#9690FF
oklch(70.7% 0.159 284)
-
Step 500
500
#7F70FD
oklch(63.1% 0.202 283.8)
-
Step 600
600
#6B52EC
oklch(55.5% 0.221 284)
-
Step 700
700
#5A41CE
oklch(49.1% 0.206 283.9)
-
Step 800
800
#4937A6
oklch(42.7% 0.17 284)
-
Step 900
900
#3C3284
oklch(37.8% 0.132 283.6)
-
Step 950
950 (this color)
#2B2757
oklch(30.5% 0.084 284)
#2B2757 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) | #112F59 | 0.039 |
| Deuteranopia (no green cones) | #0F2C56 | 0.038 |
| Tritanopia (no blue cones) | #1C313B | 0.070 |
| Achromatopsia (no color) | #2D2D2D | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B2757
#2B2757
oklch(30.5% 0.084 284)
- #353000
#353000
oklch(30.5% 0.064 103.2)
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 #2B2757, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.046
- Marine #042E60 ΔE 0.047
- Gunmetal #293241 ΔE 0.059
- Oxford Blue #1B263B ΔE 0.059
- Marine Blue #01386A ΔE 0.064
- Midnight Blue #191970 ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.070
Use #2B2757 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.