#2D316F
Closest named color: Marine Blue (#01386A). oklch(34.6% 0.106 276.6), rgb(45, 49, 111).
Aa
White text reads best on this color (11.79:1).
About this color
#2D316F is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.106 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.044 away. White text reads best on it, at 11.79:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.78:1 |
| White text | 11.79:1 |
Values
| HEX | #2D316F |
| RGB | rgb(45, 49, 111) |
| HSL | hsl(236, 42%, 31%) |
| OKLCH | oklch(34.6% 0.106 276.6) |
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 #2D316F | 11.79:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #2D316F | 1.78:1 | Fails | Lc 0.0 | Not readable |
| #2D316F text on white | 11.79:1 | AAA | Lc 96.8 | Preferred for body text |
| #2D316F 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D1D7F7
oklch(88.5% 0.044 277.1)
-
Step 300
300
#B3BDF4
oklch(81% 0.079 276.5)
-
Step 400
400
#8C98EF
oklch(70.6% 0.128 276.6)
-
Step 500
500
#727CE9
oklch(63% 0.162 276.7)
-
Step 600
600
#5C63D7
oklch(55.6% 0.175 276.5)
-
Step 700
700
#4C51BB
oklch(49.1% 0.164 276.5)
-
Step 800
800
#3E4397
oklch(42.7% 0.135 276.5)
-
Step 900
900 (this color)
#2D316F
oklch(34.6% 0.106 276.6)
-
Step 950
950
#1E2246
oklch(26.9% 0.066 276.2)
#2D316F 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) | #0C3A71 | 0.039 |
| Deuteranopia (no green cones) | #00356E | 0.042 |
| Tritanopia (no blue cones) | #073F4B | 0.092 |
| Achromatopsia (no color) | #383838 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D316F
#2D316F
oklch(34.6% 0.106 276.6)
- #443900
#443900
oklch(34.6% 0.071 97)
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 #2D316F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.044
- Prussian Blue #1D3557 ΔE 0.051
- Marine #042E60 ΔE 0.054
- Twilight Blue #0A437A ΔE 0.056
- Midnight Blue #191970 ΔE 0.070
- Dark Slate Blue #483D8B ΔE 0.073
- Dark Blue Grey #1F3B4D ΔE 0.075
- Cobalt #1E488F ΔE 0.078
Use #2D316F 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.