#2C3660
Closest named color: Prussian Blue (#1D3557). oklch(34.6% 0.075 271.9), rgb(44, 54, 96).
Aa
White text reads best on this color (11.64:1).
About this color
#2C3660 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.075 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.027 away. White text reads best on it, at 11.64:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.80:1 |
| White text | 11.64:1 |
Values
| HEX | #2C3660 |
| RGB | rgb(44, 54, 96) |
| HSL | hsl(228, 37%, 27%) |
| OKLCH | oklch(34.6% 0.075 271.9) |
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 #2C3660 | 11.64:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #2C3660 | 1.80:1 | Fails | Lc 0.0 | Not readable |
| #2C3660 text on white | 11.64:1 | AAA | Lc 96.7 | Preferred for body text |
| #2C3660 text on black | 1.80:1 | 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
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D2D8EE
oklch(88.4% 0.031 273.6)
-
Step 300
300
#B4BFE6
oklch(80.9% 0.056 272.7)
-
Step 400
400
#8D9DD9
oklch(70.6% 0.09 272.4)
-
Step 500
500
#7184CF
oklch(63.1% 0.115 272)
-
Step 600
600
#5A6DBC
oklch(55.7% 0.124 271.6)
-
Step 700
700
#4A5AA2
oklch(49% 0.117 272)
-
Step 800
800
#3D4A83
oklch(42.7% 0.096 272.1)
-
Step 900
900 (this color)
#2C3660
oklch(34.6% 0.075 271.9)
-
Step 950
950
#1E253E
oklch(27.1% 0.048 271.1)
#2C3660 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) | #253B62 | 0.016 |
| Deuteranopia (no green cones) | #20365F | 0.016 |
| Tritanopia (no blue cones) | #163F46 | 0.066 |
| Achromatopsia (no color) | #383838 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C3660
#2C3660
oklch(34.6% 0.075 271.9)
- #473800
#473800
oklch(34.7% 0.071 92)
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 #2C3660, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.027
- Marine Blue #01386A ΔE 0.041
- Dark Blue Grey #1F3B4D ΔE 0.045
- Marine #042E60 ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.054
- Gunmetal #293241 ΔE 0.055
- Space Cadet #2B2D42 ΔE 0.055
- Midnight Green #073B4C ΔE 0.057
Use #2C3660 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.