#282939
Closest named color: Space Cadet (#2B2D42). oklch(28.7% 0.029 281.6), rgb(40, 41, 57).
Aa
White text reads best on this color (14.32:1).
About this color
#282939 is a dark close to neutral grey. In OKLCH its lightness is 29%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Space Cadet (#2B2D42), ΔE 0.020 away. White text reads best on it, at 14.32:1.
| Hue family | Neutrals |
| Lightness | dark (29%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.46:1 |
| White text | 14.32:1 |
Values
| HEX | #282939 |
| RGB | rgb(40, 41, 57) |
| HSL | hsl(236, 18%, 19%) |
| OKLCH | oklch(28.7% 0.029 281.6) |
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 #282939 | 14.32:1 | AAA | Lc -104.0 | Preferred for body text |
| Black text on #282939 | 1.46:1 | Fails | Lc 0.0 | Not readable |
| #282939 text on white | 14.32:1 | AAA | Lc 101.1 | Preferred for body text |
| #282939 text on black | 1.46:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D7D8E6
oklch(88.6% 0.019 282.7)
-
Step 300
300
#BCBED7
oklch(80.8% 0.035 282)
-
Step 400
400
#9A9DC3
oklch(70.7% 0.055 281.3)
-
Step 500
500
#8285B4
oklch(63.2% 0.071 281.3)
-
Step 600
600
#6C6EA0
oklch(55.7% 0.077 281.8)
-
Step 700
700
#5A5C89
oklch(49.2% 0.072 281.5)
-
Step 800
800
#494B6F
oklch(42.7% 0.06 281.1)
-
Step 900
900
#3D3F5A
oklch(37.8% 0.046 280.7)
-
Step 950
950 (this color)
#282939
oklch(28.7% 0.029 281.6)
#282939 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) | #252B3A | 0.008 |
| Deuteranopia (no green cones) | #242A39 | 0.007 |
| Tritanopia (no blue cones) | #242C2E | 0.027 |
| Achromatopsia (no color) | #2A2A2A | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282939
#282939
oklch(28.7% 0.029 281.6)
- #2D2B1A
#2D2B1A
oklch(28.6% 0.029 102.3)
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 #282939, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.020
- Oxford Blue #1B263B ΔE 0.025
- Gunmetal #293241 ΔE 0.030
- Dark #1B2431 ΔE 0.032
- Jet #212529 ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.059
- Dark Blue Grey #1F3B4D ΔE 0.061
- Onyx #343A40 ΔE 0.061
Use #282939 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.