#2D316A
Closest named color: Marine Blue (#01386A). oklch(34.2% 0.098 276.9), rgb(45, 49, 106).
Aa
White text reads best on this color (11.93:1).
About this color
#2D316A is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.098 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.043 away. White text reads best on it, at 11.93:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.75:1 |
| White text | 11.93:1 |
Values
| HEX | #2D316A |
| RGB | rgb(45, 49, 106) |
| HSL | hsl(236, 40%, 30%) |
| OKLCH | oklch(34.2% 0.098 276.9) |
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 #2D316A | 11.93:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #2D316A | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #2D316A text on white | 11.93:1 | AAA | Lc 97.1 | Preferred for body text |
| #2D316A text on black | 1.75:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E6E9F8
oklch(93.6% 0.02 276.9)
-
Step 200
200
#D2D7F5
oklch(88.5% 0.042 278)
-
Step 300
300
#B4BDF0
oklch(80.9% 0.073 276.8)
-
Step 400
400
#8E99E9
oklch(70.7% 0.117 277)
-
Step 500
500
#747EE2
oklch(63.1% 0.149 276.9)
-
Step 600
600
#5E65D0
oklch(55.6% 0.162 276.9)
-
Step 700
700
#4E53B4
oklch(49.1% 0.151 277.1)
-
Step 800
800
#3F4492
oklch(42.6% 0.126 276.8)
-
Step 900
900 (this color)
#2D316A
oklch(34.2% 0.098 276.9)
-
Step 950
950
#1F2344
oklch(27.1% 0.061 276.3)
#2D316A 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) | #14396C | 0.034 |
| Deuteranopia (no green cones) | #0B3469 | 0.037 |
| Tritanopia (no blue cones) | #0F3E48 | 0.087 |
| Achromatopsia (no color) | #373737 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D316A
#2D316A
oklch(34.2% 0.098 276.9)
- #433800
#433800
oklch(34.2% 0.071 96.8)
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 #2D316A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.044
- Marine #042E60 ΔE 0.050
- Twilight Blue #0A437A ΔE 0.059
- Dark Blue Grey #1F3B4D ΔE 0.068
- Space Cadet #2B2D42 ΔE 0.071
- Midnight Blue #191970 ΔE 0.072
- Dark Grey Blue #29465B ΔE 0.075
Use #2D316A 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.