#283333
Closest named color: Gunmetal (#293241). oklch(31.1% 0.015 196.4), rgb(40, 51, 51).
Aa
White text reads best on this color (13.03:1).
About this color
#283333 is a dark close to neutral grey. In OKLCH its lightness is 31%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.027 away. White text reads best on it, at 13.03:1.
| Hue family | Neutrals |
| Lightness | dark (31%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.61:1 |
| White text | 13.03:1 |
Values
| HEX | #283333 |
| RGB | rgb(40, 51, 51) |
| HSL | hsl(180, 12%, 18%) |
| OKLCH | oklch(31.1% 0.015 196.4) |
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 #283333 | 13.03:1 | AAA | Lc -102.5 | Preferred for body text |
| Black text on #283333 | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #283333 text on white | 13.03:1 | AAA | Lc 99.3 | Preferred for body text |
| #283333 text on black | 1.61:1 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D2DBDB
oklch(88.5% 0.01 197)
-
Step 300
300
#B4C4C4
oklch(80.8% 0.018 196.8)
-
Step 400
400
#8DA6A6
oklch(70.6% 0.028 196.5)
-
Step 500
500
#709191
oklch(63.2% 0.037 196.3)
-
Step 600
600
#587B7B
oklch(55.7% 0.04 196.1)
-
Step 700
700
#486768
oklch(49% 0.036 198.6)
-
Step 800
800
#3B5454
oklch(42.6% 0.03 196.1)
-
Step 900
900
#334646
oklch(37.8% 0.024 196.2)
-
Step 950
950 (this color)
#283333
oklch(31.1% 0.015 196.4)
#283333 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) | #313233 | 0.015 |
| Deuteranopia (no green cones) | #2F3033 | 0.015 |
| Tritanopia (no blue cones) | #253433 | 0.005 |
| Achromatopsia (no color) | #313131 | 0.015 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #283333, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.027
- Onyx #343A40 ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.040
- Dark Blue Grey #1F3B4D ΔE 0.046
- Pakistan Green #283618 ΔE 0.049
- Midnight Green #073B4C ΔE 0.050
- Jet #212529 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.057
Use #283333 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.