#333440
Closest named color: Gunmetal (#293241). oklch(32.9% 0.021 281.4), rgb(51, 52, 64).
Aa
White text reads best on this color (12.30:1).
About this color
#333440 is a dark close to neutral grey. In OKLCH its lightness is 33%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.018 away. White text reads best on it, at 12.30:1.
| Hue family | Neutrals |
| Lightness | dark (33%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.70:1 |
| White text | 12.30:1 |
Values
| HEX | #333440 |
| RGB | rgb(51, 52, 64) |
| HSL | hsl(235, 11%, 23%) |
| OKLCH | oklch(32.9% 0.021 281.4) |
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 #333440 | 12.30:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #333440 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #333440 text on white | 12.30:1 | AAA | Lc 98.1 | Preferred for body text |
| #333440 text on black | 1.70:1 | 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 900.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9ED
oklch(93.5% 0.005 286.3)
-
Step 200
200
#D8D8DF
oklch(88.4% 0.01 286.2)
-
Step 300
300
#BEC0CB
oklch(81% 0.016 277.8)
-
Step 400
400
#9D9FB1
oklch(70.7% 0.026 280.7)
-
Step 500
500
#86889D
oklch(63.2% 0.031 281.2)
-
Step 600
600
#6F7188
oklch(55.5% 0.036 281.3)
-
Step 700
700
#5D5F73
oklch(49.1% 0.032 280.7)
-
Step 800
800
#4C4D5E
oklch(42.6% 0.028 282.5)
-
Step 900
900 (this color)
#333440
oklch(32.9% 0.021 281.4)
-
Step 950
950
#25262D
oklch(27.1% 0.013 279.1)
#333440 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) | #313541 | 0.004 |
| Deuteranopia (no green cones) | #303440 | 0.005 |
| Tritanopia (no blue cones) | #303638 | 0.019 |
| Achromatopsia (no color) | #353535 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #333440
#333440
oklch(32.9% 0.021 281.4)
- #373629
#373629
oklch(33% 0.022 103.9)
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 #333440, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.018
- Onyx #343A40 ΔE 0.020
- Space Cadet #2B2D42 ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.049
- Midnight Green #073B4C ΔE 0.050
- Charcoal #264653 ΔE 0.059
Use #333440 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.