#2C355E
Closest named color: Prussian Blue (#1D3557). oklch(34.2% 0.073 272.7), rgb(44, 53, 94).
Aa
White text reads best on this color (11.81:1).
About this color
#2C355E is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.073 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.024 away. White text reads best on it, at 11.81:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.77:1 |
| White text | 11.81:1 |
Values
| HEX | #2C355E |
| RGB | rgb(44, 53, 94) |
| HSL | hsl(229, 36%, 27%) |
| OKLCH | oklch(34.2% 0.073 272.7) |
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 #2C355E | 11.81:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #2C355E | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #2C355E text on white | 11.81:1 | AAA | Lc 97.0 | Preferred for body text |
| #2C355E 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
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
#B4BFE5
oklch(80.9% 0.055 272.4)
-
Step 400
400
#8E9DD8
oklch(70.7% 0.088 273)
-
Step 500
500
#7384CD
oklch(63.1% 0.112 272.9)
-
Step 600
600
#5C6DBA
oklch(55.7% 0.121 272.5)
-
Step 700
700
#4C5AA0
oklch(49% 0.113 273)
-
Step 800
800
#3E4A82
oklch(42.7% 0.094 272.7)
-
Step 900
900 (this color)
#2C355E
oklch(34.2% 0.073 272.7)
-
Step 950
950
#1F253D
oklch(27.1% 0.046 272.4)
#2C355E 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) | #253A60 | 0.017 |
| Deuteranopia (no green cones) | #20365D | 0.016 |
| Tritanopia (no blue cones) | #183E45 | 0.065 |
| Achromatopsia (no color) | #383838 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C355E
#2C355E
oklch(34.2% 0.073 272.7)
- #453700
#453700
oklch(34.2% 0.07 93)
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 #2C355E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.024
- Marine Blue #01386A ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.043
- Marine #042E60 ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.051
- Gunmetal #293241 ΔE 0.052
- Midnight Green #073B4C ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.055
Use #2C355E 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.