#28333C
Closest named color: Gunmetal (#293241). oklch(31.5% 0.022 243.2), rgb(40, 51, 60).
Aa
White text reads best on this color (12.89:1).
About this color
#28333C is a dark close to neutral grey. In OKLCH its lightness is 31%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.011 away. White text reads best on it, at 12.89:1.
| Hue family | Neutrals |
| Lightness | dark (31%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.62:1 |
| White text | 12.89:1 |
Values
| HEX | #28333C |
| RGB | rgb(40, 51, 60) |
| HSL | hsl(207, 20%, 20%) |
| OKLCH | oklch(31.5% 0.022 243.2) |
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 #28333C | 12.89:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #28333C | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #28333C text on white | 12.89:1 | AAA | Lc 99.1 | Preferred for body text |
| #28333C text on black | 1.62:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D1DAE2
oklch(88.4% 0.015 244.7)
-
Step 300
300
#B3C3D0
oklch(80.9% 0.025 242.4)
-
Step 400
400
#8BA4B9
oklch(70.7% 0.042 243.7)
-
Step 500
500
#6E8EA8
oklch(63.2% 0.053 243.2)
-
Step 600
600
#557893
oklch(55.7% 0.058 242.2)
-
Step 700
700
#45647D
oklch(48.9% 0.054 243.5)
-
Step 800
800
#395266
oklch(42.7% 0.045 243.2)
-
Step 900
900
#314453
oklch(37.7% 0.035 242.6)
-
Step 950
950 (this color)
#28333C
oklch(31.5% 0.022 243.2)
#28333C 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) | #2F333C | 0.011 |
| Deuteranopia (no green cones) | #2D313C | 0.010 |
| Tritanopia (no blue cones) | #223536 | 0.017 |
| Achromatopsia (no color) | #323232 | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28333C
#28333C
oklch(31.5% 0.022 243.2)
- #3A2F26
#3A2F26
oklch(31.4% 0.022 61.2)
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 #28333C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.011
- Space Cadet #2B2D42 ΔE 0.026
- Onyx #343A40 ΔE 0.032
- Dark Blue Grey #1F3B4D ΔE 0.034
- Midnight Green #073B4C ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.048
- Oxford Blue #1B263B ΔE 0.051
- Jet #212529 ΔE 0.054
Use #28333C 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.