#2B2F57
Closest named color: Prussian Blue (#1D3557). oklch(32.3% 0.071 277.3), rgb(43, 47, 87).
Aa
White text reads best on this color (12.75:1).
About this color
#2B2F57 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.071 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.025 away. White text reads best on it, at 12.75:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.64:1 |
| White text | 12.75:1 |
Values
| HEX | #2B2F57 |
| RGB | rgb(43, 47, 87) |
| HSL | hsl(235, 34%, 25%) |
| OKLCH | oklch(32.3% 0.071 277.3) |
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 #2B2F57 | 12.75:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #2B2F57 | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #2B2F57 text on white | 12.75:1 | AAA | Lc 98.7 | Preferred for body text |
| #2B2F57 text on black | 1.64:1 | 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
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#D1D7F8
oklch(88.5% 0.046 277.3)
-
Step 300
300
#B3BCF7
oklch(80.9% 0.084 277.6)
-
Step 400
400
#8D97F3
oklch(70.7% 0.134 277.7)
-
Step 500
500
#727AEE
oklch(63% 0.171 277.3)
-
Step 600
600
#5D60DD
oklch(55.6% 0.187 277.4)
-
Step 700
700
#4D4FC0
oklch(49.2% 0.173 277.2)
-
Step 800
800
#3F419B
oklch(42.7% 0.143 277.5)
-
Step 900
900
#35387B
oklch(37.6% 0.112 277.7)
-
Step 950
950 (this color)
#2B2F57
oklch(32.3% 0.071 277.3)
#2B2F57 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) | #203459 | 0.020 |
| Deuteranopia (no green cones) | #1C3156 | 0.021 |
| Tritanopia (no blue cones) | #1B373E | 0.062 |
| Achromatopsia (no color) | #323232 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B2F57
#2B2F57
oklch(32.3% 0.071 277.3)
- #3D3300
#3D3300
oklch(32.2% 0.066 97.1)
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 #2B2F57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.025
- Space Cadet #2B2D42 ΔE 0.037
- Gunmetal #293241 ΔE 0.044
- Marine #042E60 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.048
- Marine Blue #01386A ΔE 0.051
- Midnight Green #073B4C ΔE 0.058
- Oxford Blue #1B263B ΔE 0.062
Use #2B2F57 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.