#282D4A
Closest named color: Space Cadet (#2B2D42). oklch(30.7% 0.053 275.4), rgb(40, 45, 74).
Aa
White text reads best on this color (13.42:1).
About this color
#282D4A is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.053 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.015 away. White text reads best on it, at 13.42:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.56:1 |
| White text | 13.42:1 |
Values
| HEX | #282D4A |
| RGB | rgb(40, 45, 74) |
| HSL | hsl(231, 30%, 22%) |
| OKLCH | oklch(30.7% 0.053 275.4) |
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 #282D4A | 13.42:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #282D4A | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #282D4A text on white | 13.42:1 | AAA | Lc 99.8 | Preferred for body text |
| #282D4A text on black | 1.56:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D2D8F1
oklch(88.5% 0.035 274.9)
-
Step 300
300
#B5BEEA
oklch(80.9% 0.063 275.9)
-
Step 400
400
#8F9BDF
oklch(70.6% 0.101 275.8)
-
Step 500
500
#7481D6
oklch(63% 0.128 275.5)
-
Step 600
600
#5E69C3
oklch(55.6% 0.139 275.7)
-
Step 700
700
#4D57A9
oklch(49.1% 0.13 275.3)
-
Step 800
800
#3F4888
oklch(42.7% 0.106 275)
-
Step 900
900
#353D6D
oklch(37.7% 0.082 274.6)
-
Step 950
950 (this color)
#282D4A
oklch(30.7% 0.053 275.4)
#282D4A 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) | #23304B | 0.011 |
| Deuteranopia (no green cones) | #202E49 | 0.012 |
| Tritanopia (no blue cones) | #1D3338 | 0.047 |
| Achromatopsia (no color) | #2F2F2F | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282D4A
#282D4A
oklch(30.7% 0.053 275.4)
- #382F0C
#382F0C
oklch(30.7% 0.052 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 #282D4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.015
- Gunmetal #293241 ΔE 0.027
- Prussian Blue #1D3557 ΔE 0.032
- Oxford Blue #1B263B ΔE 0.041
- Dark Blue Grey #1F3B4D ΔE 0.045
- Midnight Green #073B4C ΔE 0.052
- Marine #042E60 ΔE 0.053
- Dark #1B2431 ΔE 0.056
Use #282D4A 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.