#282E57
Closest named color: Prussian Blue (#1D3557). oklch(31.8% 0.073 275.2), rgb(40, 46, 87).
Aa
White text reads best on this color (12.97:1).
About this color
#282E57 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.073 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.025 away. White text reads best on it, at 12.97:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.61:1 |
| White text | 12.97:1 |
Values
| HEX | #282E57 |
| RGB | rgb(40, 46, 87) |
| HSL | hsl(232, 37%, 25%) |
| OKLCH | oklch(31.8% 0.073 275.2) |
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 #282E57 | 12.97:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #282E57 | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #282E57 text on white | 12.97:1 | AAA | Lc 99.1 | Preferred for body text |
| #282E57 text on black | 1.61:1 | 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 950.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#CFD7FA
oklch(88.4% 0.049 275.2)
-
Step 300
300
#B0BDF9
oklch(81% 0.086 274.8)
-
Step 400
400
#8898F6
oklch(70.7% 0.138 275)
-
Step 500
500
#6D7BF2
oklch(63.1% 0.177 275.1)
-
Step 600
600
#5760E1
oklch(55.5% 0.193 275.1)
-
Step 700
700
#484FC3
oklch(49.1% 0.178 275.1)
-
Step 800
800
#3B419E
oklch(42.6% 0.149 275.3)
-
Step 900
900
#32397D
oklch(37.8% 0.114 275.1)
-
Step 950
950 (this color)
#282E57
oklch(31.8% 0.073 275.2)
#282E57 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) | #1D3359 | 0.020 |
| Deuteranopia (no green cones) | #192F56 | 0.020 |
| Tritanopia (no blue cones) | #15373E | 0.065 |
| Achromatopsia (no color) | #313131 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282E57
#282E57
oklch(31.8% 0.073 275.2)
- #3D3100
#3D3100
oklch(31.7% 0.065 94)
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 #282E57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.025
- Space Cadet #2B2D42 ΔE 0.038
- Marine #042E60 ΔE 0.040
- Gunmetal #293241 ΔE 0.045
- Marine Blue #01386A ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.050
- Midnight Green #073B4C ΔE 0.058
- Oxford Blue #1B263B ΔE 0.059
Use #282E57 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.