#2D3969
Closest named color: Marine Blue (#01386A). oklch(36% 0.084 271.1), rgb(45, 57, 105).
Aa
White text reads best on this color (11.04:1).
About this color
#2D3969 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.084 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.040 away. White text reads best on it, at 11.04:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.90:1 |
| White text | 11.04:1 |
Values
| HEX | #2D3969 |
| RGB | rgb(45, 57, 105) |
| HSL | hsl(228, 40%, 29%) |
| OKLCH | oklch(36% 0.084 271.1) |
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 #2D3969 | 11.04:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #2D3969 | 1.90:1 | Fails | Lc 8.5 | Not readable |
| #2D3969 text on white | 11.04:1 | AAA | Lc 95.4 | Preferred for body text |
| #2D3969 text on black | 1.90:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F1
oklch(88.4% 0.035 271.5)
-
Step 300
300
#B1BFEA
oklch(80.8% 0.063 270.8)
-
Step 400
400
#899DE0
oklch(70.7% 0.101 270.9)
-
Step 500
500
#6D83D7
oklch(63% 0.129 271.2)
-
Step 600
600
#566BC5
oklch(55.6% 0.141 271.3)
-
Step 700
700
#4659AA
oklch(49.1% 0.131 271)
-
Step 800
800
#3A498A
oklch(42.7% 0.109 271.4)
-
Step 900
900 (this color)
#2D3969
oklch(36% 0.084 271.1)
-
Step 950
950
#1D2440
oklch(26.9% 0.053 271.8)
#2D3969 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) | #253F6B | 0.019 |
| Deuteranopia (no green cones) | #1E3968 | 0.019 |
| Tritanopia (no blue cones) | #0E434C | 0.074 |
| Achromatopsia (no color) | #3C3C3C | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D3969
#2D3969
oklch(36% 0.084 271.1)
- #4B3B00
#4B3B00
oklch(35.9% 0.073 91.6)
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 #2D3969, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.040
- Prussian Blue #1D3557 ΔE 0.040
- Twilight Blue #0A437A ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.056
- Marine #042E60 ΔE 0.060
- Charcoal #264653 ΔE 0.064
- Midnight Green #073B4C ΔE 0.067
Use #2D3969 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.