#2D2D7B
Closest named color: Marine Blue (#01386A). oklch(34.8% 0.129 277.3), rgb(45, 45, 123).
Aa
White text reads best on this color (11.84:1).
About this color
#2D2D7B is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.129 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.057 away. White text reads best on it, at 11.84:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.77:1 |
| White text | 11.84:1 |
Values
| HEX | #2D2D7B |
| RGB | rgb(45, 45, 123) |
| HSL | hsl(240, 46%, 33%) |
| OKLCH | oklch(34.8% 0.129 277.3) |
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 #2D2D7B | 11.84:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #2D2D7B | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #2D2D7B text on white | 11.84:1 | AAA | Lc 96.8 | Preferred for body text |
| #2D2D7B text on black | 1.77:1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FD
oklch(93.7% 0.027 276.8)
-
Step 200
200
#D0D7FD
oklch(88.6% 0.053 277)
-
Step 300
300
#B1BBFF
oklch(80.9% 0.097 277.5)
-
Step 400
400
#8A95FF
oklch(70.7% 0.154 277.2)
-
Step 500
500
#7076FE
oklch(63.2% 0.198 277.2)
-
Step 600
600
#5B5AED
oklch(55.7% 0.215 277.1)
-
Step 700
700
#4C48CE
oklch(49.1% 0.2 277.4)
-
Step 800
800
#3E3CA6
oklch(42.6% 0.165 277.6)
-
Step 900
900 (this color)
#2D2D7B
oklch(34.8% 0.129 277.3)
-
Step 950
950
#1E204D
oklch(27% 0.081 277.5)
#2D2D7B 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) | #003B7E | 0.048 |
| Deuteranopia (no green cones) | #003479 | 0.043 |
| Tritanopia (no blue cones) | #00404F | 0.109 |
| Achromatopsia (no color) | #373737 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D2D7B
#2D2D7B
oklch(34.8% 0.129 277.3)
- #453A00
#453A00
oklch(35% 0.072 97.2)
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 #2D2D7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.057
- Midnight Blue #191970 ΔE 0.063
- Twilight Blue #0A437A ΔE 0.063
- Marine #042E60 ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.069
- Prussian Blue #1D3557 ΔE 0.072
- Royal #0C1793 ΔE 0.074
- Cobalt #1E488F ΔE 0.076
Use #2D2D7B 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.