#282E51
Closest named color: Prussian Blue (#1D3557). oklch(31.4% 0.063 274.8), rgb(40, 46, 81).
Aa
White text reads best on this color (13.12:1).
About this color
#282E51 is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.063 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 13.12:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.59:1 |
| White text | 13.12:1 |
Values
| HEX | #282E51 |
| RGB | rgb(40, 46, 81) |
| HSL | hsl(231, 34%, 24%) |
| OKLCH | oklch(31.4% 0.063 274.8) |
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 #282E51 | 13.12:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #282E51 | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #282E51 text on white | 13.12:1 | AAA | Lc 99.4 | Preferred for body text |
| #282E51 text on black | 1.59:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D1D8F5
oklch(88.6% 0.041 274.8)
-
Step 300
300
#B2BDF2
oklch(80.8% 0.076 275.5)
-
Step 400
400
#8B9AEB
oklch(70.7% 0.12 274.9)
-
Step 500
500
#707FE4
oklch(63.2% 0.152 274.9)
-
Step 600
600
#5966D2
oklch(55.6% 0.165 274.6)
-
Step 700
700
#4A54B6
oklch(49.2% 0.153 274.9)
-
Step 800
800
#3C4594
oklch(42.7% 0.129 274.7)
-
Step 900
900
#333B76
oklch(37.8% 0.1 274.8)
-
Step 950
950 (this color)
#282E51
oklch(31.4% 0.063 274.8)
#282E51 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) | #213252 | 0.015 |
| Deuteranopia (no green cones) | #1D2F50 | 0.016 |
| Tritanopia (no blue cones) | #19353B | 0.056 |
| Achromatopsia (no color) | #303030 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282E51
#282E51
oklch(31.4% 0.063 274.8)
- #3B3001
#3B3001
oklch(31.2% 0.063 94.8)
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 #282E51, 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 0.027
- Gunmetal #293241 ΔE 0.035
- Marine #042E60 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.045
- Oxford Blue #1B263B ΔE 0.050
- Midnight Green #073B4C ΔE 0.053
- Marine Blue #01386A ΔE 0.056
Use #282E51 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.