#282D51
Closest named color: Prussian Blue (#1D3557). oklch(31.1% 0.065 276), rgb(40, 45, 81).
Aa
White text reads best on this color (13.25:1).
About this color
#282D51 is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.065 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.027 away. White text reads best on it, at 13.25:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.58:1 |
| White text | 13.25:1 |
Values
| HEX | #282D51 |
| RGB | rgb(40, 45, 81) |
| HSL | hsl(233, 34%, 24%) |
| OKLCH | oklch(31.1% 0.065 276) |
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 #282D51 | 13.25:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #282D51 | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #282D51 text on white | 13.25:1 | AAA | Lc 99.5 | Preferred for body text |
| #282D51 text on black | 1.58:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D1D7F6
oklch(88.4% 0.043 276.8)
-
Step 300
300
#B3BDF3
oklch(80.9% 0.077 276.4)
-
Step 400
400
#8C99EC
oklch(70.7% 0.122 276)
-
Step 500
500
#717DE6
oklch(63% 0.157 276)
-
Step 600
600
#5B64D4
oklch(55.5% 0.17 275.9)
-
Step 700
700
#4B52B8
oklch(49% 0.159 275.9)
-
Step 800
800
#3E4495
oklch(42.7% 0.131 276.2)
-
Step 900
900
#343A77
oklch(37.7% 0.103 276.1)
-
Step 950
950 (this color)
#282D51
oklch(31.1% 0.065 276)
#282D51 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) | #1F3152 | 0.016 |
| Deuteranopia (no green cones) | #1C2E50 | 0.017 |
| Tritanopia (no blue cones) | #19343B | 0.056 |
| Achromatopsia (no color) | #303030 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282D51
#282D51
oklch(31.1% 0.065 276)
- #3A3000
#3A3000
oklch(31.1% 0.064 96.5)
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 #282D51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.027
- Space Cadet #2B2D42 ΔE 0.028
- Gunmetal #293241 ΔE 0.037
- Marine #042E60 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.048
- Oxford Blue #1B263B ΔE 0.049
- Midnight Green #073B4C ΔE 0.055
- Marine Blue #01386A ΔE 0.057
Use #282D51 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.