#282D5E
Closest named color: Prussian Blue (#1D3557). oklch(32.1% 0.086 276), rgb(40, 45, 94).
Aa
White text reads best on this color (12.90:1).
About this color
#282D5E is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.086 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.032 away. White text reads best on it, at 12.90:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.62:1 |
| White text | 12.90:1 |
Values
| HEX | #282D5E |
| RGB | rgb(40, 45, 94) |
| HSL | hsl(234, 40%, 26%) |
| OKLCH | oklch(32.1% 0.086 276) |
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 #282D5E | 12.90:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #282D5E | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #282D5E text on white | 12.90:1 | AAA | Lc 98.9 | Preferred for body text |
| #282D5E text on black | 1.62:1 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E4E9FE
oklch(93.7% 0.029 275.2)
-
Step 200
200
#CED7FF
oklch(88.5% 0.056 275.2)
-
Step 300
300
#AFBCFF
oklch(80.9% 0.096 275.6)
-
Step 400
400
#8896FF
oklch(70.8% 0.153 276)
-
Step 500
500
#6D76FF
oklch(63% 0.2 276.2)
-
Step 600
600
#5758F4
oklch(55.7% 0.227 275.8)
-
Step 700
700
#4846D4
oklch(49% 0.211 275.9)
-
Step 800
800
#3B3BAB
oklch(42.7% 0.174 276.1)
-
Step 900
900
#313588
oklch(37.8% 0.136 275.7)
-
Step 950
950 (this color)
#282D5E
oklch(32.1% 0.086 276)
#282D5E 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) | #163460 | 0.028 |
| Deuteranopia (no green cones) | #0F2F5D | 0.030 |
| Tritanopia (no blue cones) | #0F3841 | 0.076 |
| Achromatopsia (no color) | #323232 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282D5E
#282D5E
oklch(32.1% 0.086 276)
- #3D3200
#3D3200
oklch(32% 0.066 95.6)
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 #282D5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.032
- Marine #042E60 ΔE 0.037
- Marine Blue #01386A ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.051
- Gunmetal #293241 ΔE 0.058
- Dark Blue Grey #1F3B4D ΔE 0.060
- Midnight Blue #191970 ΔE 0.066
- Midnight Green #073B4C ΔE 0.067
Use #282D5E 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.