#282C40
Closest named color: Space Cadet (#2B2D42). oklch(29.9% 0.037 275.2), rgb(40, 44, 64).
Aa
White text reads best on this color (13.77:1).
About this color
#282C40 is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.037 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.007 away. White text reads best on it, at 13.77:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.52:1 |
| White text | 13.77:1 |
Values
| HEX | #282C40 |
| RGB | rgb(40, 44, 64) |
| HSL | hsl(230, 23%, 20%) |
| OKLCH | oklch(29.9% 0.037 275.2) |
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 #282C40 | 13.77:1 | AAA | Lc -103.4 | Preferred for body text |
| Black text on #282C40 | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #282C40 text on white | 13.77:1 | AAA | Lc 100.3 | Preferred for body text |
| #282C40 text on black | 1.52:1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EA
oklch(88.5% 0.025 275.9)
-
Step 300
300
#B8BFDD
oklch(80.9% 0.043 275)
-
Step 400
400
#949ECD
oklch(70.8% 0.07 275.2)
-
Step 500
500
#7A85BF
oklch(63.1% 0.088 275.3)
-
Step 600
600
#636EAC
oklch(55.6% 0.097 275.1)
-
Step 700
700
#525C93
oklch(49.1% 0.089 274.8)
-
Step 800
800
#434B78
oklch(42.7% 0.075 275.1)
-
Step 900
900
#393F60
oklch(37.7% 0.057 275.4)
-
Step 950
950 (this color)
#282C40
oklch(29.9% 0.037 275.2)
#282C40 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) | #262E41 | 0.007 |
| Deuteranopia (no green cones) | #242C40 | 0.006 |
| Tritanopia (no blue cones) | #213033 | 0.033 |
| Achromatopsia (no color) | #2D2D2D | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282C40
#282C40
oklch(29.9% 0.037 275.2)
- #332D17
#332D17
oklch(29.8% 0.037 94.6)
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 #282C40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.007
- Gunmetal #293241 ΔE 0.020
- Oxford Blue #1B263B ΔE 0.031
- Dark #1B2431 ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.045
- Jet #212529 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.049
- Onyx #343A40 ΔE 0.053
Use #282C40 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.