#282E71
Closest named color: Marine Blue (#01386A). oklch(33.8% 0.114 274.6), rgb(40, 46, 113).
Aa
White text reads best on this color (12.21:1).
About this color
#282E71 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.114 and its hue 275°. 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 12.21:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.71:1 |
| White text | 12.21:1 |
Values
| HEX | #282E71 |
| RGB | rgb(40, 46, 113) |
| HSL | hsl(235, 48%, 30%) |
| OKLCH | oklch(33.8% 0.114 274.6) |
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 #282E71 | 12.21:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #282E71 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #282E71 text on white | 12.21:1 | AAA | Lc 97.5 | Preferred for body text |
| #282E71 text on black | 1.71:1 | 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
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#CFD7F9
oklch(88.4% 0.048 274.9)
-
Step 300
300
#B0BDF8
oklch(80.9% 0.085 274.7)
-
Step 400
400
#8898F5
oklch(70.7% 0.137 275)
-
Step 500
500
#6C7CF1
oklch(63.1% 0.174 274.4)
-
Step 600
600
#5661E0
oklch(55.5% 0.191 274.6)
-
Step 700
700
#474FC2
oklch(49% 0.177 274.7)
-
Step 800
800
#3A429D
oklch(42.7% 0.146 274.6)
-
Step 900
900 (this color)
#282E71
oklch(33.8% 0.114 274.6)
-
Step 950
950
#1D2249
oklch(27% 0.072 275)
#282E71 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) | #003973 | 0.041 |
| Deuteranopia (no green cones) | #003270 | 0.036 |
| Tritanopia (no blue cones) | #003E4A | 0.098 |
| Achromatopsia (no color) | #353535 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282E71
#282E71
oklch(33.8% 0.114 274.6)
- #433600
#433600
oklch(33.7% 0.069 93.9)
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 #282E71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.044
- Marine #042E60 ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.055
- Midnight Blue #191970 ΔE 0.058
- Twilight Blue #0A437A ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.081
- Dark Blue Grey #1F3B4D ΔE 0.082
- Royal #0C1793 ΔE 0.082
Use #282E71 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.