#282D5A
Closest named color: Prussian Blue (#1D3557). oklch(31.8% 0.08 276.1), rgb(40, 45, 90).
Aa
White text reads best on this color (13.01:1).
About this color
#282D5A is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.080 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.029 away. White text reads best on it, at 13.01:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.61:1 |
| White text | 13.01:1 |
Values
| HEX | #282D5A |
| RGB | rgb(40, 45, 90) |
| HSL | hsl(234, 38%, 25%) |
| OKLCH | oklch(31.8% 0.08 276.1) |
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 #282D5A | 13.01:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #282D5A | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #282D5A text on white | 13.01:1 | AAA | Lc 99.1 | Preferred for body text |
| #282D5A 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
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CFD7FC
oklch(88.5% 0.052 275.7)
-
Step 300
300
#B0BCFE
oklch(81% 0.094 276.1)
-
Step 400
400
#8896FD
oklch(70.7% 0.151 276)
-
Step 500
500
#6E78FB
oklch(63.2% 0.192 276.1)
-
Step 600
600
#595CEA
oklch(55.6% 0.209 276.3)
-
Step 700
700
#494ACC
oklch(49.1% 0.196 276.1)
-
Step 800
800
#3C3EA5
oklch(42.7% 0.162 276.2)
-
Step 900
900
#323682
oklch(37.6% 0.126 276.2)
-
Step 950
950 (this color)
#282D5A
oklch(31.8% 0.08 276.1)
#282D5A 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) | #19335C | 0.024 |
| Deuteranopia (no green cones) | #142F59 | 0.026 |
| Tritanopia (no blue cones) | #13373F | 0.070 |
| Achromatopsia (no color) | #313131 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282D5A
#282D5A
oklch(31.8% 0.08 276.1)
- #3C3200
#3C3200
oklch(31.8% 0.066 96.9)
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 #282D5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.029
- Marine #042E60 ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.044
- Marine Blue #01386A ΔE 0.048
- Gunmetal #293241 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.056
- Oxford Blue #1B263B ΔE 0.063
- Midnight Green #073B4C ΔE 0.063
Use #282D5A 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.