#2B3640
Closest named color: Gunmetal (#293241). oklch(32.7% 0.023 246), rgb(43, 54, 64).
Aa
White text reads best on this color (12.32:1).
About this color
#2B3640 is a dark close to neutral grey. In OKLCH its lightness is 33%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.015 away. White text reads best on it, at 12.32:1.
| Hue family | Neutrals |
| Lightness | dark (33%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.70:1 |
| White text | 12.32:1 |
Values
| HEX | #2B3640 |
| RGB | rgb(43, 54, 64) |
| HSL | hsl(209, 20%, 21%) |
| OKLCH | oklch(32.7% 0.023 246) |
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 #2B3640 | 12.32:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #2B3640 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #2B3640 text on white | 12.32:1 | AAA | Lc 98.1 | Preferred for body text |
| #2B3640 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D4DADF
oklch(88.5% 0.009 242.9)
-
Step 300
300
#B8C2CB
oklch(80.9% 0.017 245.1)
-
Step 400
400
#93A3B1
oklch(70.7% 0.027 244.6)
-
Step 500
500
#788C9E
oklch(63.1% 0.036 245.6)
-
Step 600
600
#617689
oklch(55.6% 0.039 245.9)
-
Step 700
700
#506374
oklch(49.1% 0.036 245.6)
-
Step 800
800
#42515F
oklch(42.8% 0.03 246.7)
-
Step 900
900 (this color)
#2B3640
oklch(32.7% 0.023 246)
-
Step 950
950
#21272D
oklch(26.9% 0.014 248.4)
#2B3640 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) | #323641 | 0.011 |
| Deuteranopia (no green cones) | #2F3440 | 0.009 |
| Tritanopia (no blue cones) | #253839 | 0.019 |
| Achromatopsia (no color) | #353535 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B3640
#2B3640
oklch(32.7% 0.023 246)
- #3D3228
#3D3228
oklch(32.6% 0.023 64.1)
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 #2B3640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.015
- Onyx #343A40 ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.032
- Midnight Green #073B4C ΔE 0.038
- Prussian Blue #1D3557 ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.047
- Charcoal #264653 ΔE 0.054
Use #2B3640 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.