#2B2D7F
Closest named color: Marine Blue (#01386A). oklch(35.1% 0.135 275.8), rgb(43, 45, 127).
Aa
White text reads best on this color (11.76:1).
About this color
#2B2D7F is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.135 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.059 away. White text reads best on it, at 11.76:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.78:1 |
| White text | 11.76:1 |
Values
| HEX | #2B2D7F |
| RGB | rgb(43, 45, 127) |
| HSL | hsl(239, 49%, 33%) |
| OKLCH | oklch(35.1% 0.135 275.8) |
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 #2B2D7F | 11.76:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #2B2D7F | 1.78:1 | Fails | Lc 7.3 | Not readable |
| #2B2D7F text on white | 11.76:1 | AAA | Lc 96.6 | Preferred for body text |
| #2B2D7F text on black | 1.78:1 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CED7FF
oklch(88.5% 0.056 275.2)
-
Step 300
300
#AFBCFF
oklch(80.9% 0.096 275.6)
-
Step 400
400
#8796FF
oklch(70.7% 0.154 275.6)
-
Step 500
500
#6C77FF
oklch(63.2% 0.199 275.6)
-
Step 600
600
#5758F3
oklch(55.6% 0.226 275.9)
-
Step 700
700
#4847D4
oklch(49.2% 0.21 275.8)
-
Step 800
800
#3B3BAB
oklch(42.7% 0.174 276.1)
-
Step 900
900 (this color)
#2B2D7F
oklch(35.1% 0.135 275.8)
-
Step 950
950
#1C204F
oklch(27% 0.085 275.5)
#2B2D7F 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) | #003B82 | 0.046 |
| Deuteranopia (no green cones) | #00347D | 0.040 |
| Tritanopia (no blue cones) | #004251 | 0.114 |
| Achromatopsia (no color) | #383838 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B2D7F
#2B2D7F
oklch(35.1% 0.135 275.8)
- #463A00
#463A00
oklch(35.1% 0.072 96)
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 #2B2D7F, closest first.
No curated palette has a color within ΔE 0.04 of #2B2D7F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.059
- Twilight Blue #0A437A ΔE 0.063
- Midnight Blue #191970 ΔE 0.063
- Dark Slate Blue #483D8B ΔE 0.069
- Royal #0C1793 ΔE 0.069
- Marine #042E60 ΔE 0.069
- Cobalt #1E488F ΔE 0.073
- Prussian Blue #1D3557 ΔE 0.078
Use #2B2D7F 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.