#282C39
Closest named color: Space Cadet (#2B2D42). oklch(29.5% 0.024 271.5), rgb(40, 44, 57).
Aa
White text reads best on this color (13.91:1).
About this color
#282C39 is a dark close to neutral grey. In OKLCH its lightness is 29%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Space Cadet (#2B2D42), ΔE 0.017 away. White text reads best on it, at 13.91:1.
| Hue family | Neutrals |
| Lightness | dark (29%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.50:1 |
| White text | 13.91:1 |
Values
| HEX | #282C39 |
| RGB | rgb(40, 44, 57) |
| HSL | hsl(226, 18%, 19%) |
| OKLCH | oklch(29.5% 0.024 271.5) |
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 #282C39 | 13.91:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #282C39 | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #282C39 text on white | 13.91:1 | AAA | Lc 100.5 | Preferred for body text |
| #282C39 text on black | 1.50:1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAF0
oklch(93.7% 0.008 271.3)
-
Step 200
200
#D5D9E4
oklch(88.5% 0.016 270)
-
Step 300
300
#BAC0D4
oklch(80.9% 0.029 272.4)
-
Step 400
400
#96A0BE
oklch(70.8% 0.045 270.7)
-
Step 500
500
#7C88AE
oklch(63.1% 0.059 271)
-
Step 600
600
#667199
oklch(55.5% 0.064 272.3)
-
Step 700
700
#545F83
oklch(49.1% 0.06 271)
-
Step 800
800
#454E6A
oklch(42.8% 0.048 270.5)
-
Step 900
900
#3A4156
oklch(37.8% 0.037 270.2)
-
Step 950
950 (this color)
#282C39
oklch(29.5% 0.024 271.5)
#282C39 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) | #282D3A | 0.003 |
| Deuteranopia (no green cones) | #272C39 | 0.002 |
| Tritanopia (no blue cones) | #242E30 | 0.021 |
| Achromatopsia (no color) | #2C2C2C | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282C39
#282C39
oklch(29.5% 0.024 271.5)
- #312C1F
#312C1F
oklch(29.4% 0.023 89.5)
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 #282C39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.017
- Gunmetal #293241 ΔE 0.022
- Oxford Blue #1B263B ΔE 0.032
- Jet #212529 ΔE 0.037
- Dark #1B2431 ΔE 0.038
- Onyx #343A40 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.055
Use #282C39 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.