#282F72
Closest named color: Marine Blue (#01386A). oklch(34.1% 0.114 274.1), rgb(40, 47, 114).
Aa
White text reads best on this color (12.07:1).
About this color
#282F72 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.114 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.043 away. White text reads best on it, at 12.07:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.73:1 |
| White text | 12.07:1 |
Values
| HEX | #282F72 |
| RGB | rgb(40, 47, 114) |
| HSL | hsl(234, 48%, 30%) |
| OKLCH | oklch(34.1% 0.114 274.1) |
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 #282F72 | 12.07:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #282F72 | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #282F72 text on white | 12.07:1 | AAA | Lc 97.3 | Preferred for body text |
| #282F72 text on black | 1.73:1 | 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
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CFD8F9
oklch(88.6% 0.047 273.4)
-
Step 300
300
#AFBDF9
oklch(80.9% 0.086 274.1)
-
Step 400
400
#8799F5
oklch(70.8% 0.136 274)
-
Step 500
500
#6B7CF2
oklch(63.1% 0.176 274.1)
-
Step 600
600
#5562E0
oklch(55.6% 0.19 274)
-
Step 700
700
#4650C3
oklch(49.2% 0.177 274.1)
-
Step 800
800
#39429D
oklch(42.6% 0.146 274.1)
-
Step 900
900 (this color)
#282F72
oklch(34.1% 0.114 274.1)
-
Step 950
950
#1C2249
oklch(27% 0.072 274)
#282F72 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) | #003974 | 0.039 |
| Deuteranopia (no green cones) | #003371 | 0.036 |
| Tritanopia (no blue cones) | #003F4B | 0.098 |
| Achromatopsia (no color) | #363636 | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282F72
#282F72
oklch(34.1% 0.114 274.1)
- #443700
#443700
oklch(34.1% 0.07 94.2)
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 #282F72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.043
- Marine #042E60 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.055
- Twilight Blue #0A437A ΔE 0.058
- Midnight Blue #191970 ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.078
- Cobalt #1E488F ΔE 0.080
- Dark Blue Grey #1F3B4D ΔE 0.081
Use #282F72 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.